<?xml version="1.0" encoding="US-ASCII"?>
<!--XBRL Document Created with WebFilings-->
<link:linkbase xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedPeriodStartLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodStartLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/netLabel" xlink:href="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd#netLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedNetLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedNetLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTerseLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedPeriodEndLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodEndLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTotalLabel" xlink:type="simple" />
  <link:labelLink xlink:role="http://www.xbrl.org/2003/role/link" xlink:type="extended">
    <link:label id="lab_us-gaap_StockholdersEquityNoteAbstract_458039A3A20097F72D88A4DF41420127_label_en-US" xlink:label="lab_us-gaap_StockholdersEquityNoteAbstract_458039A3A20097F72D88A4DF41420127" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stockholders' Equity Note [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StockholdersEquityNoteAbstract" xlink:label="loc_us-gaap_StockholdersEquityNoteAbstract_458039A3A20097F72D88A4DF41420127" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquityNoteAbstract_458039A3A20097F72D88A4DF41420127" xlink:to="lab_us-gaap_StockholdersEquityNoteAbstract_458039A3A20097F72D88A4DF41420127" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfComprehensiveIncomeLossTableTextBlock_797BC8EBF8C5D2B3E3A8A4DF414283CE_verboseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfComprehensiveIncomeLossTableTextBlock_797BC8EBF8C5D2B3E3A8A4DF414283CE" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Schedule of changes in the components of comprehensive income (loss)</link:label>
    <link:label id="lab_us-gaap_ScheduleOfComprehensiveIncomeLossTableTextBlock_797BC8EBF8C5D2B3E3A8A4DF414283CE_label_en-US" xlink:label="lab_us-gaap_ScheduleOfComprehensiveIncomeLossTableTextBlock_797BC8EBF8C5D2B3E3A8A4DF414283CE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Comprehensive Income (Loss) [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfComprehensiveIncomeLossTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfComprehensiveIncomeLossTableTextBlock_797BC8EBF8C5D2B3E3A8A4DF414283CE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfComprehensiveIncomeLossTableTextBlock_797BC8EBF8C5D2B3E3A8A4DF414283CE" xlink:to="lab_us-gaap_ScheduleOfComprehensiveIncomeLossTableTextBlock_797BC8EBF8C5D2B3E3A8A4DF414283CE" xlink:type="arc" />
    <link:label id="lab_pll_CompositionOfUnrealizedGainsLossesOnAvailableForSaleSecuritiesNetOfTaxTableTextBlock_30C2EED853501009165CA4DF4142810E_verboseLabel_en-US" xlink:label="lab_pll_CompositionOfUnrealizedGainsLossesOnAvailableForSaleSecuritiesNetOfTaxTableTextBlock_30C2EED853501009165CA4DF4142810E" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Schedule of the unrealized gains (losses) on available-for-sale securities, net of related taxes</link:label>
    <link:label id="lab_pll_CompositionOfUnrealizedGainsLossesOnAvailableForSaleSecuritiesNetOfTaxTableTextBlock_30C2EED853501009165CA4DF4142810E_label_en-US" xlink:label="lab_pll_CompositionOfUnrealizedGainsLossesOnAvailableForSaleSecuritiesNetOfTaxTableTextBlock_30C2EED853501009165CA4DF4142810E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Composition Of Unrealized Gains Losses On Available For Sale Securities Net Of Tax [Table Text Block]</link:label>
    <link:label id="lab_pll_CompositionOfUnrealizedGainsLossesOnAvailableForSaleSecuritiesNetOfTaxTableTextBlock_30C2EED853501009165CA4DF4142810E_documentation_en-US" xlink:label="lab_pll_CompositionOfUnrealizedGainsLossesOnAvailableForSaleSecuritiesNetOfTaxTableTextBlock_30C2EED853501009165CA4DF4142810E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure relating to composition of Unrealized gains (losses) on available-for-sale securities, net of related taxes during the reporting period.</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_CompositionOfUnrealizedGainsLossesOnAvailableForSaleSecuritiesNetOfTaxTableTextBlock" xlink:label="loc_pll_CompositionOfUnrealizedGainsLossesOnAvailableForSaleSecuritiesNetOfTaxTableTextBlock_30C2EED853501009165CA4DF4142810E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_CompositionOfUnrealizedGainsLossesOnAvailableForSaleSecuritiesNetOfTaxTableTextBlock_30C2EED853501009165CA4DF4142810E" xlink:to="lab_pll_CompositionOfUnrealizedGainsLossesOnAvailableForSaleSecuritiesNetOfTaxTableTextBlock_30C2EED853501009165CA4DF4142810E" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_28B3D49E17CD4A3605ACA4DF39D2879D_label_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_28B3D49E17CD4A3605ACA4DF39D2879D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Commitments and Contingencies Disclosure [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_28B3D49E17CD4A3605ACA4DF39D2879D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_28B3D49E17CD4A3605ACA4DF39D2879D" xlink:to="lab_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_28B3D49E17CD4A3605ACA4DF39D2879D" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_8ED1FB8DAC74C37F793EA4DF39D2CA4C_verboseLabel_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_8ED1FB8DAC74C37F793EA4DF39D2CA4C" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">CONTINGENCIES AND COMMITMENTS</link:label>
    <link:label id="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_8ED1FB8DAC74C37F793EA4DF39D2CA4C_label_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_8ED1FB8DAC74C37F793EA4DF39D2CA4C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Commitments and Contingencies Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_8ED1FB8DAC74C37F793EA4DF39D2CA4C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_8ED1FB8DAC74C37F793EA4DF39D2CA4C" xlink:to="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_8ED1FB8DAC74C37F793EA4DF39D2CA4C" xlink:type="arc" />
    <link:label id="lab_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_D2C58C96CF42017DA6B9C4E95114088A_label_en-US" xlink:label="lab_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_D2C58C96CF42017DA6B9C4E95114088A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of Compensation Related Costs, Share-based Payments [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:label="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_D2C58C96CF42017DA6B9C4E95114088A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_D2C58C96CF42017DA6B9C4E95114088A" xlink:to="lab_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_D2C58C96CF42017DA6B9C4E95114088A" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_3CF33E14E9C92A4A4DF1C4E951EE4B71_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_3CF33E14E9C92A4A4DF1C4E951EE4B71" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_3CF33E14E9C92A4A4DF1C4E951EE4B71_label_en-US" xlink:label="lab_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_3CF33E14E9C92A4A4DF1C4E951EE4B71" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_3CF33E14E9C92A4A4DF1C4E951EE4B71" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_3CF33E14E9C92A4A4DF1C4E951EE4B71" xlink:to="lab_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_3CF33E14E9C92A4A4DF1C4E951EE4B71" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxis_94776CAEF5770776FB0EC4E951EEF7D7_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxis_94776CAEF5770776FB0EC4E951EEF7D7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Award Type and Plan Name [Axis]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxis_94776CAEF5770776FB0EC4E951EEF7D7_label_en-US" xlink:label="lab_us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxis_94776CAEF5770776FB0EC4E951EEF7D7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Award Type and Plan Name [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxis" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxis_94776CAEF5770776FB0EC4E951EEF7D7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxis_94776CAEF5770776FB0EC4E951EEF7D7" xlink:to="lab_us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxis_94776CAEF5770776FB0EC4E951EEF7D7" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_88C4A888C624231C2297C4E951EE5C8D_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_88C4A888C624231C2297C4E951EE5C8D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangements by Share-based Payment Award, Award Type and Plan Name [Domain]</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_88C4A888C624231C2297C4E951EE5C8D_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_88C4A888C624231C2297C4E951EE5C8D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangements by Share-based Payment Award, Award Type and Plan Name [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_88C4A888C624231C2297C4E951EE5C8D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_88C4A888C624231C2297C4E951EE5C8D" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_88C4A888C624231C2297C4E951EE5C8D" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockCompensationPlanMember_219044B72AB2B81AF04EC5ADBAFB91A1_terseLabel_en-US" xlink:label="lab_us-gaap_StockCompensationPlanMember_219044B72AB2B81AF04EC5ADBAFB91A1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2012 Stock Plan [Member]</link:label>
    <link:label id="lab_us-gaap_StockCompensationPlanMember_219044B72AB2B81AF04EC5ADBAFB91A1_label_en-US" xlink:label="lab_us-gaap_StockCompensationPlanMember_219044B72AB2B81AF04EC5ADBAFB91A1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stock Compensation Plan [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StockCompensationPlanMember" xlink:label="loc_us-gaap_StockCompensationPlanMember_219044B72AB2B81AF04EC5ADBAFB91A1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockCompensationPlanMember_219044B72AB2B81AF04EC5ADBAFB91A1" xlink:to="lab_us-gaap_StockCompensationPlanMember_219044B72AB2B81AF04EC5ADBAFB91A1" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockOptionsMember_4788D13B5EDC3FE68778C5BC986AB642_terseLabel_en-US" xlink:label="lab_us-gaap_StockOptionsMember_4788D13B5EDC3FE68778C5BC986AB642" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock options [Member]</link:label>
    <link:label id="lab_us-gaap_StockOptionsMember_4788D13B5EDC3FE68778C5BC986AB642_label_en-US" xlink:label="lab_us-gaap_StockOptionsMember_4788D13B5EDC3FE68778C5BC986AB642" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stock Options [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StockOptionsMember" xlink:label="loc_us-gaap_StockOptionsMember_4788D13B5EDC3FE68778C5BC986AB642" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockOptionsMember_4788D13B5EDC3FE68778C5BC986AB642" xlink:to="lab_us-gaap_StockOptionsMember_4788D13B5EDC3FE68778C5BC986AB642" xlink:type="arc" />
    <link:label id="lab_us-gaap_RestrictedStockUnitsRSUMember_D5986962CCD5E96E55B4C5E03F1BC8AC_terseLabel_en-US" xlink:label="lab_us-gaap_RestrictedStockUnitsRSUMember_D5986962CCD5E96E55B4C5E03F1BC8AC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restricted stock units [Member]</link:label>
    <link:label id="lab_us-gaap_RestrictedStockUnitsRSUMember_D5986962CCD5E96E55B4C5E03F1BC8AC_label_en-US" xlink:label="lab_us-gaap_RestrictedStockUnitsRSUMember_D5986962CCD5E96E55B4C5E03F1BC8AC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restricted Stock Units (RSUs) [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_D5986962CCD5E96E55B4C5E03F1BC8AC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestrictedStockUnitsRSUMember_D5986962CCD5E96E55B4C5E03F1BC8AC" xlink:to="lab_us-gaap_RestrictedStockUnitsRSUMember_D5986962CCD5E96E55B4C5E03F1BC8AC" xlink:type="arc" />
    <link:label id="lab_pll_FullValueAwardMember_CD854831D8CCFE943B1BCA61BAE79476_terseLabel_en-US" xlink:label="lab_pll_FullValueAwardMember_CD854831D8CCFE943B1BCA61BAE79476" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Full value award [Member]</link:label>
    <link:label id="lab_pll_FullValueAwardMember_CD854831D8CCFE943B1BCA61BAE79476_label_en-US" xlink:label="lab_pll_FullValueAwardMember_CD854831D8CCFE943B1BCA61BAE79476" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Full value award [Member]</link:label>
    <link:label id="lab_pll_FullValueAwardMember_CD854831D8CCFE943B1BCA61BAE79476_documentation_en-US" xlink:label="lab_pll_FullValueAwardMember_CD854831D8CCFE943B1BCA61BAE79476" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Includes restricuted shares, restricted units, performance shares, and performance units</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_FullValueAwardMember" xlink:label="loc_pll_FullValueAwardMember_CD854831D8CCFE943B1BCA61BAE79476" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_FullValueAwardMember_CD854831D8CCFE943B1BCA61BAE79476" xlink:to="lab_pll_FullValueAwardMember_CD854831D8CCFE943B1BCA61BAE79476" xlink:type="arc" />
    <link:label id="lab_pll_PayoutOptionsAxis_54B6683E61F3ADB3C350C9E1F39D61C4_terseLabel_en-US" xlink:label="lab_pll_PayoutOptionsAxis_54B6683E61F3ADB3C350C9E1F39D61C4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Payout options [Axis]</link:label>
    <link:label id="lab_pll_PayoutOptionsAxis_54B6683E61F3ADB3C350C9E1F39D61C4_label_en-US" xlink:label="lab_pll_PayoutOptionsAxis_54B6683E61F3ADB3C350C9E1F39D61C4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payout options [Axis]</link:label>
    <link:label id="lab_pll_PayoutOptionsAxis_54B6683E61F3ADB3C350C9E1F39D61C4_documentation_en-US" xlink:label="lab_pll_PayoutOptionsAxis_54B6683E61F3ADB3C350C9E1F39D61C4" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Payout options [Axis]</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_PayoutOptionsAxis" xlink:label="loc_pll_PayoutOptionsAxis_54B6683E61F3ADB3C350C9E1F39D61C4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_PayoutOptionsAxis_54B6683E61F3ADB3C350C9E1F39D61C4" xlink:to="lab_pll_PayoutOptionsAxis_54B6683E61F3ADB3C350C9E1F39D61C4" xlink:type="arc" />
    <link:label id="lab_pll_PayoutOptionsDomain_497B360C8A989B29E5AFC9E31E214CAB_terseLabel_en-US" xlink:label="lab_pll_PayoutOptionsDomain_497B360C8A989B29E5AFC9E31E214CAB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Payout options [Domain]</link:label>
    <link:label id="lab_pll_PayoutOptionsDomain_497B360C8A989B29E5AFC9E31E214CAB_label_en-US" xlink:label="lab_pll_PayoutOptionsDomain_497B360C8A989B29E5AFC9E31E214CAB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payout options [Domain]</link:label>
    <link:label id="lab_pll_PayoutOptionsDomain_497B360C8A989B29E5AFC9E31E214CAB_documentation_en-US" xlink:label="lab_pll_PayoutOptionsDomain_497B360C8A989B29E5AFC9E31E214CAB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Payout options [Domain]</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_PayoutOptionsDomain" xlink:label="loc_pll_PayoutOptionsDomain_497B360C8A989B29E5AFC9E31E214CAB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_PayoutOptionsDomain_497B360C8A989B29E5AFC9E31E214CAB" xlink:to="lab_pll_PayoutOptionsDomain_497B360C8A989B29E5AFC9E31E214CAB" xlink:type="arc" />
    <link:label id="lab_pll_LumpSumMember_BF111CD0C214C1536592C9E27DC32E5B_terseLabel_en-US" xlink:label="lab_pll_LumpSumMember_BF111CD0C214C1536592C9E27DC32E5B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Lump sum [Member]</link:label>
    <link:label id="lab_pll_LumpSumMember_BF111CD0C214C1536592C9E27DC32E5B_label_en-US" xlink:label="lab_pll_LumpSumMember_BF111CD0C214C1536592C9E27DC32E5B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lump sum [Member]</link:label>
    <link:label id="lab_pll_LumpSumMember_BF111CD0C214C1536592C9E27DC32E5B_documentation_en-US" xlink:label="lab_pll_LumpSumMember_BF111CD0C214C1536592C9E27DC32E5B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lump sum [Member]</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_LumpSumMember" xlink:label="loc_pll_LumpSumMember_BF111CD0C214C1536592C9E27DC32E5B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_LumpSumMember_BF111CD0C214C1536592C9E27DC32E5B" xlink:to="lab_pll_LumpSumMember_BF111CD0C214C1536592C9E27DC32E5B" xlink:type="arc" />
    <link:label id="lab_pll_EqualAnnualInstallmentsMember_CD9C800E69798D64B040C9E4470088A4_terseLabel_en-US" xlink:label="lab_pll_EqualAnnualInstallmentsMember_CD9C800E69798D64B040C9E4470088A4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equal annual installments [Member]</link:label>
    <link:label id="lab_pll_EqualAnnualInstallmentsMember_CD9C800E69798D64B040C9E4470088A4_label_en-US" xlink:label="lab_pll_EqualAnnualInstallmentsMember_CD9C800E69798D64B040C9E4470088A4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equal annual installments [Member]</link:label>
    <link:label id="lab_pll_EqualAnnualInstallmentsMember_CD9C800E69798D64B040C9E4470088A4_documentation_en-US" xlink:label="lab_pll_EqualAnnualInstallmentsMember_CD9C800E69798D64B040C9E4470088A4" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Equal annual installments [Member]</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_EqualAnnualInstallmentsMember" xlink:label="loc_pll_EqualAnnualInstallmentsMember_CD9C800E69798D64B040C9E4470088A4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_EqualAnnualInstallmentsMember_CD9C800E69798D64B040C9E4470088A4" xlink:to="lab_pll_EqualAnnualInstallmentsMember_CD9C800E69798D64B040C9E4470088A4" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01E6FE9F31D2C77CFF48C4E951F074C6_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01E6FE9F31D2C77CFF48C4E951F074C6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award [Line Items]</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01E6FE9F31D2C77CFF48C4E951F074C6_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01E6FE9F31D2C77CFF48C4E951F074C6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01E6FE9F31D2C77CFF48C4E951F074C6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01E6FE9F31D2C77CFF48C4E951F074C6" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01E6FE9F31D2C77CFF48C4E951F074C6" xlink:type="arc" />
    <link:label id="lab_pll_NumberOfShareBasedEmployeeAndDirectorCompensationAwardTypes_A524D22AF54C5F7D9EB1C500820894BC_terseLabel_en-US" xlink:label="lab_pll_NumberOfShareBasedEmployeeAndDirectorCompensationAwardTypes_A524D22AF54C5F7D9EB1C500820894BC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of Share Based Employee and Director Compensation Award Types</link:label>
    <link:label id="lab_pll_NumberOfShareBasedEmployeeAndDirectorCompensationAwardTypes_A524D22AF54C5F7D9EB1C500820894BC_label_en-US" xlink:label="lab_pll_NumberOfShareBasedEmployeeAndDirectorCompensationAwardTypes_A524D22AF54C5F7D9EB1C500820894BC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of Share Based Employee and Director Compensation Award Types</link:label>
    <link:label id="lab_pll_NumberOfShareBasedEmployeeAndDirectorCompensationAwardTypes_A524D22AF54C5F7D9EB1C500820894BC_documentation_en-US" xlink:label="lab_pll_NumberOfShareBasedEmployeeAndDirectorCompensationAwardTypes_A524D22AF54C5F7D9EB1C500820894BC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number of Share Based Employee and Director Compensation Award Types</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_NumberOfShareBasedEmployeeAndDirectorCompensationAwardTypes" xlink:label="loc_pll_NumberOfShareBasedEmployeeAndDirectorCompensationAwardTypes_A524D22AF54C5F7D9EB1C500820894BC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_NumberOfShareBasedEmployeeAndDirectorCompensationAwardTypes_A524D22AF54C5F7D9EB1C500820894BC" xlink:to="lab_pll_NumberOfShareBasedEmployeeAndDirectorCompensationAwardTypes_A524D22AF54C5F7D9EB1C500820894BC" xlink:type="arc" />
    <link:label id="lab_pll_CashFeesPaidToDirectorThatMayBeDeferredInAdditionalUnits_8081385ED3E39A139463C9DE11ED7C62_terseLabel_en-US" xlink:label="lab_pll_CashFeesPaidToDirectorThatMayBeDeferredInAdditionalUnits_8081385ED3E39A139463C9DE11ED7C62" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash fees paid to director that may be deferred in additional units</link:label>
    <link:label id="lab_pll_CashFeesPaidToDirectorThatMayBeDeferredInAdditionalUnits_8081385ED3E39A139463C9DE11ED7C62_label_en-US" xlink:label="lab_pll_CashFeesPaidToDirectorThatMayBeDeferredInAdditionalUnits_8081385ED3E39A139463C9DE11ED7C62" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash fees paid to director that may be deferred in additional units</link:label>
    <link:label id="lab_pll_CashFeesPaidToDirectorThatMayBeDeferredInAdditionalUnits_8081385ED3E39A139463C9DE11ED7C62_documentation_en-US" xlink:label="lab_pll_CashFeesPaidToDirectorThatMayBeDeferredInAdditionalUnits_8081385ED3E39A139463C9DE11ED7C62" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The percentage of cash fees paid to director that may be deferred in additional units</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_CashFeesPaidToDirectorThatMayBeDeferredInAdditionalUnits" xlink:label="loc_pll_CashFeesPaidToDirectorThatMayBeDeferredInAdditionalUnits_8081385ED3E39A139463C9DE11ED7C62" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_CashFeesPaidToDirectorThatMayBeDeferredInAdditionalUnits_8081385ED3E39A139463C9DE11ED7C62" xlink:to="lab_pll_CashFeesPaidToDirectorThatMayBeDeferredInAdditionalUnits_8081385ED3E39A139463C9DE11ED7C62" xlink:type="arc" />
    <link:label id="lab_pll_CashFeesDeferredPayoutOptions_F3EE3CE01DEF1E6A07E3C9E0AFDF0131_terseLabel_en-US" xlink:label="lab_pll_CashFeesDeferredPayoutOptions_F3EE3CE01DEF1E6A07E3C9E0AFDF0131" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash fees deferred payout options</link:label>
    <link:label id="lab_pll_CashFeesDeferredPayoutOptions_F3EE3CE01DEF1E6A07E3C9E0AFDF0131_label_en-US" xlink:label="lab_pll_CashFeesDeferredPayoutOptions_F3EE3CE01DEF1E6A07E3C9E0AFDF0131" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash fees deferred payout options</link:label>
    <link:label id="lab_pll_CashFeesDeferredPayoutOptions_F3EE3CE01DEF1E6A07E3C9E0AFDF0131_documentation_en-US" xlink:label="lab_pll_CashFeesDeferredPayoutOptions_F3EE3CE01DEF1E6A07E3C9E0AFDF0131" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Cash fees deferred payout options</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_CashFeesDeferredPayoutOptions" xlink:label="loc_pll_CashFeesDeferredPayoutOptions_F3EE3CE01DEF1E6A07E3C9E0AFDF0131" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_CashFeesDeferredPayoutOptions_F3EE3CE01DEF1E6A07E3C9E0AFDF0131" xlink:to="lab_pll_CashFeesDeferredPayoutOptions_F3EE3CE01DEF1E6A07E3C9E0AFDF0131" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_04CA233A28DB6296F9D5C4E956ADA081_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_04CA233A28DB6296F9D5C4E956ADA081" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_04CA233A28DB6296F9D5C4E956ADA081_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_04CA233A28DB6296F9D5C4E956ADA081" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_04CA233A28DB6296F9D5C4E956ADA081" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_04CA233A28DB6296F9D5C4E956ADA081" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_04CA233A28DB6296F9D5C4E956ADA081" xlink:type="arc" />
    <link:label id="lab_pll_ReductionInNumberOfSharesAvailableForAwardsPerShareGranted_6D030085732C1C2528FAC9EFF495EA19_terseLabel_en-US" xlink:label="lab_pll_ReductionInNumberOfSharesAvailableForAwardsPerShareGranted_6D030085732C1C2528FAC9EFF495EA19" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Reduction in the number of shares available for awards per share granted</link:label>
    <link:label id="lab_pll_ReductionInNumberOfSharesAvailableForAwardsPerShareGranted_6D030085732C1C2528FAC9EFF495EA19_label_en-US" xlink:label="lab_pll_ReductionInNumberOfSharesAvailableForAwardsPerShareGranted_6D030085732C1C2528FAC9EFF495EA19" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reduction In The Number Of Shares Available For Awards Per Share Granted</link:label>
    <link:label id="lab_pll_ReductionInNumberOfSharesAvailableForAwardsPerShareGranted_6D030085732C1C2528FAC9EFF495EA19_documentation_en-US" xlink:label="lab_pll_ReductionInNumberOfSharesAvailableForAwardsPerShareGranted_6D030085732C1C2528FAC9EFF495EA19" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Reduction in the number of shares available for awards per share granted</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_ReductionInNumberOfSharesAvailableForAwardsPerShareGranted" xlink:label="loc_pll_ReductionInNumberOfSharesAvailableForAwardsPerShareGranted_6D030085732C1C2528FAC9EFF495EA19" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_ReductionInNumberOfSharesAvailableForAwardsPerShareGranted_6D030085732C1C2528FAC9EFF495EA19" xlink:to="lab_pll_ReductionInNumberOfSharesAvailableForAwardsPerShareGranted_6D030085732C1C2528FAC9EFF495EA19" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod_2197236A1019994F9D48C5B8F67A591A_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod_2197236A1019994F9D48C5B8F67A591A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod_2197236A1019994F9D48C5B8F67A591A_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod_2197236A1019994F9D48C5B8F67A591A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod_2197236A1019994F9D48C5B8F67A591A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod_2197236A1019994F9D48C5B8F67A591A" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod_2197236A1019994F9D48C5B8F67A591A" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod_6995090C42F53F98554BED980CFF360B_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod_6995090C42F53F98554BED980CFF360B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod_6995090C42F53F98554BED980CFF360B_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod_6995090C42F53F98554BED980CFF360B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod_6995090C42F53F98554BED980CFF360B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod_6995090C42F53F98554BED980CFF360B" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod_6995090C42F53F98554BED980CFF360B" xlink:type="arc" />
    <link:label id="lab_pll_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationPeriod_BC5C85D4475120921CDCC5BF65DD0040_terseLabel_en-US" xlink:label="lab_pll_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationPeriod_BC5C85D4475120921CDCC5BF65DD0040" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period</link:label>
    <link:label id="lab_pll_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationPeriod_BC5C85D4475120921CDCC5BF65DD0040_label_en-US" xlink:label="lab_pll_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationPeriod_BC5C85D4475120921CDCC5BF65DD0040" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share Based Compensation Arrangement by Share-based Payment Award Expiration Period</link:label>
    <link:label id="lab_pll_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationPeriod_BC5C85D4475120921CDCC5BF65DD0040_documentation_en-US" xlink:label="lab_pll_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationPeriod_BC5C85D4475120921CDCC5BF65DD0040" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationPeriod" xlink:label="loc_pll_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationPeriod_BC5C85D4475120921CDCC5BF65DD0040" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationPeriod_BC5C85D4475120921CDCC5BF65DD0040" xlink:to="lab_pll_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationPeriod_BC5C85D4475120921CDCC5BF65DD0040" xlink:type="arc" />
    <link:label id="lab_pll_OptionsExercisableWithRespectToSharesSubjectToOption_8B62AFFD4A117470F8D1C9EE0C7B20DF_terseLabel_en-US" xlink:label="lab_pll_OptionsExercisableWithRespectToSharesSubjectToOption_8B62AFFD4A117470F8D1C9EE0C7B20DF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Options exercisable with respect to shares subject to the option</link:label>
    <link:label id="lab_pll_OptionsExercisableWithRespectToSharesSubjectToOption_8B62AFFD4A117470F8D1C9EE0C7B20DF_label_en-US" xlink:label="lab_pll_OptionsExercisableWithRespectToSharesSubjectToOption_8B62AFFD4A117470F8D1C9EE0C7B20DF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Options exercisable with respect to shares subject to the option</link:label>
    <link:label id="lab_pll_OptionsExercisableWithRespectToSharesSubjectToOption_8B62AFFD4A117470F8D1C9EE0C7B20DF_documentation_en-US" xlink:label="lab_pll_OptionsExercisableWithRespectToSharesSubjectToOption_8B62AFFD4A117470F8D1C9EE0C7B20DF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Options exercisable with respect to shares subject to the option</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_OptionsExercisableWithRespectToSharesSubjectToOption" xlink:label="loc_pll_OptionsExercisableWithRespectToSharesSubjectToOption_8B62AFFD4A117470F8D1C9EE0C7B20DF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_OptionsExercisableWithRespectToSharesSubjectToOption_8B62AFFD4A117470F8D1C9EE0C7B20DF" xlink:to="lab_pll_OptionsExercisableWithRespectToSharesSubjectToOption_8B62AFFD4A117470F8D1C9EE0C7B20DF" xlink:type="arc" />
    <link:label id="lab_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract_5A91D23DD19E388AF9F0A4DF40164824_label_en-US" xlink:label="lab_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract_5A91D23DD19E388AF9F0A4DF40164824" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative Instruments and Hedging Activities Disclosure [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract" xlink:label="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract_5A91D23DD19E388AF9F0A4DF40164824" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract_5A91D23DD19E388AF9F0A4DF40164824" xlink:to="lab_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract_5A91D23DD19E388AF9F0A4DF40164824" xlink:type="arc" />
    <link:label id="lab_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_AFDAAACE27E5E3F41BACA4DF4016D6EF_verboseLabel_en-US" xlink:label="lab_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_AFDAAACE27E5E3F41BACA4DF4016D6EF" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table]</link:label>
    <link:label id="lab_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_AFDAAACE27E5E3F41BACA4DF4016D6EF_label_en-US" xlink:label="lab_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_AFDAAACE27E5E3F41BACA4DF4016D6EF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable" xlink:label="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_AFDAAACE27E5E3F41BACA4DF4016D6EF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_AFDAAACE27E5E3F41BACA4DF4016D6EF" xlink:to="lab_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_AFDAAACE27E5E3F41BACA4DF4016D6EF" xlink:type="arc" />
    <link:label id="lab_us-gaap_DerivativeInstrumentRiskAxis_F79E960CF23A9C56F14DE42F98C2CEAF_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeInstrumentRiskAxis_F79E960CF23A9C56F14DE42F98C2CEAF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Derivative Instrument Risk [Axis]</link:label>
    <link:label id="lab_us-gaap_DerivativeInstrumentRiskAxis_F79E960CF23A9C56F14DE42F98C2CEAF_label_en-US" xlink:label="lab_us-gaap_DerivativeInstrumentRiskAxis_F79E960CF23A9C56F14DE42F98C2CEAF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative Instrument Risk [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_F79E960CF23A9C56F14DE42F98C2CEAF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_F79E960CF23A9C56F14DE42F98C2CEAF" xlink:to="lab_us-gaap_DerivativeInstrumentRiskAxis_F79E960CF23A9C56F14DE42F98C2CEAF" xlink:type="arc" />
    <link:label id="lab_us-gaap_DerivativeContractTypeDomain_620284A7804E7E2EDDBAE42FF42CD5A8_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeContractTypeDomain_620284A7804E7E2EDDBAE42FF42CD5A8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Derivative Contract Type [Domain]</link:label>
    <link:label id="lab_us-gaap_DerivativeContractTypeDomain_620284A7804E7E2EDDBAE42FF42CD5A8_label_en-US" xlink:label="lab_us-gaap_DerivativeContractTypeDomain_620284A7804E7E2EDDBAE42FF42CD5A8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative Contract Type [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_620284A7804E7E2EDDBAE42FF42CD5A8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_620284A7804E7E2EDDBAE42FF42CD5A8" xlink:to="lab_us-gaap_DerivativeContractTypeDomain_620284A7804E7E2EDDBAE42FF42CD5A8" xlink:type="arc" />
    <link:label id="lab_us-gaap_ForeignExchangeForwardMember_7AF61E032E05E043E5D8E42FB579D9F1_terseLabel_en-US" xlink:label="lab_us-gaap_ForeignExchangeForwardMember_7AF61E032E05E043E5D8E42FB579D9F1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Foreign Exchange Forward [Member]</link:label>
    <link:label id="lab_us-gaap_ForeignExchangeForwardMember_7AF61E032E05E043E5D8E42FB579D9F1_label_en-US" xlink:label="lab_us-gaap_ForeignExchangeForwardMember_7AF61E032E05E043E5D8E42FB579D9F1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Foreign Exchange Forward [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ForeignExchangeForwardMember" xlink:label="loc_us-gaap_ForeignExchangeForwardMember_7AF61E032E05E043E5D8E42FB579D9F1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ForeignExchangeForwardMember_7AF61E032E05E043E5D8E42FB579D9F1" xlink:to="lab_us-gaap_ForeignExchangeForwardMember_7AF61E032E05E043E5D8E42FB579D9F1" xlink:type="arc" />
    <link:label id="lab_us-gaap_HedgingDesignationAxis_53F39FDF3250FCF8B96EE42F1506F9EA_terseLabel_en-US" xlink:label="lab_us-gaap_HedgingDesignationAxis_53F39FDF3250FCF8B96EE42F1506F9EA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Hedging Designation [Axis]</link:label>
    <link:label id="lab_us-gaap_HedgingDesignationAxis_53F39FDF3250FCF8B96EE42F1506F9EA_label_en-US" xlink:label="lab_us-gaap_HedgingDesignationAxis_53F39FDF3250FCF8B96EE42F1506F9EA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Hedging Designation [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_HedgingDesignationAxis" xlink:label="loc_us-gaap_HedgingDesignationAxis_53F39FDF3250FCF8B96EE42F1506F9EA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_HedgingDesignationAxis_53F39FDF3250FCF8B96EE42F1506F9EA" xlink:to="lab_us-gaap_HedgingDesignationAxis_53F39FDF3250FCF8B96EE42F1506F9EA" xlink:type="arc" />
    <link:label id="lab_us-gaap_HedgingDesignationDomain_4507C3BA32E9F9BC6300E430213B1C73_terseLabel_en-US" xlink:label="lab_us-gaap_HedgingDesignationDomain_4507C3BA32E9F9BC6300E430213B1C73" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Hedging Designation [Domain]</link:label>
    <link:label id="lab_us-gaap_HedgingDesignationDomain_4507C3BA32E9F9BC6300E430213B1C73_label_en-US" xlink:label="lab_us-gaap_HedgingDesignationDomain_4507C3BA32E9F9BC6300E430213B1C73" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Hedging Designation [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_HedgingDesignationDomain" xlink:label="loc_us-gaap_HedgingDesignationDomain_4507C3BA32E9F9BC6300E430213B1C73" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_HedgingDesignationDomain_4507C3BA32E9F9BC6300E430213B1C73" xlink:to="lab_us-gaap_HedgingDesignationDomain_4507C3BA32E9F9BC6300E430213B1C73" xlink:type="arc" />
    <link:label id="lab_us-gaap_NondesignatedMember_053DE226F16DD5DA8094E42F3818F028_terseLabel_en-US" xlink:label="lab_us-gaap_NondesignatedMember_053DE226F16DD5DA8094E42F3818F028" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Not Designated as Hedging Instrument [Member]</link:label>
    <link:label id="lab_us-gaap_NondesignatedMember_053DE226F16DD5DA8094E42F3818F028_label_en-US" xlink:label="lab_us-gaap_NondesignatedMember_053DE226F16DD5DA8094E42F3818F028" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Not Designated as Hedging Instrument [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NondesignatedMember" xlink:label="loc_us-gaap_NondesignatedMember_053DE226F16DD5DA8094E42F3818F028" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NondesignatedMember_053DE226F16DD5DA8094E42F3818F028" xlink:to="lab_us-gaap_NondesignatedMember_053DE226F16DD5DA8094E42F3818F028" xlink:type="arc" />
    <link:label id="lab_us-gaap_DerivativesFairValueByBalanceSheetLocationAxis_3D30AACE8F03020DC4A8E42E4795C13E_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativesFairValueByBalanceSheetLocationAxis_3D30AACE8F03020DC4A8E42E4795C13E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Derivatives, Fair Value, by Balance Sheet Location [Axis]</link:label>
    <link:label id="lab_us-gaap_DerivativesFairValueByBalanceSheetLocationAxis_3D30AACE8F03020DC4A8E42E4795C13E_label_en-US" xlink:label="lab_us-gaap_DerivativesFairValueByBalanceSheetLocationAxis_3D30AACE8F03020DC4A8E42E4795C13E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivatives, Fair Value, by Balance Sheet Location [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DerivativesFairValueByBalanceSheetLocationAxis" xlink:label="loc_us-gaap_DerivativesFairValueByBalanceSheetLocationAxis_3D30AACE8F03020DC4A8E42E4795C13E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativesFairValueByBalanceSheetLocationAxis_3D30AACE8F03020DC4A8E42E4795C13E" xlink:to="lab_us-gaap_DerivativesFairValueByBalanceSheetLocationAxis_3D30AACE8F03020DC4A8E42E4795C13E" xlink:type="arc" />
    <link:label id="lab_us-gaap_BalanceSheetLocationDomain_46C731C8B21F670A5071E4305260D06D_terseLabel_en-US" xlink:label="lab_us-gaap_BalanceSheetLocationDomain_46C731C8B21F670A5071E4305260D06D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Balance Sheet Location [Domain]</link:label>
    <link:label id="lab_us-gaap_BalanceSheetLocationDomain_46C731C8B21F670A5071E4305260D06D_label_en-US" xlink:label="lab_us-gaap_BalanceSheetLocationDomain_46C731C8B21F670A5071E4305260D06D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Balance Sheet Location [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_46C731C8B21F670A5071E4305260D06D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_46C731C8B21F670A5071E4305260D06D" xlink:to="lab_us-gaap_BalanceSheetLocationDomain_46C731C8B21F670A5071E4305260D06D" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherAssetsMember_2C2BDB7D17C94126B6E9E42E90244CC2_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsMember_2C2BDB7D17C94126B6E9E42E90244CC2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Assets [Member]</link:label>
    <link:label id="lab_us-gaap_OtherAssetsMember_2C2BDB7D17C94126B6E9E42E90244CC2_label_en-US" xlink:label="lab_us-gaap_OtherAssetsMember_2C2BDB7D17C94126B6E9E42E90244CC2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Assets [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherAssetsMember" xlink:label="loc_us-gaap_OtherAssetsMember_2C2BDB7D17C94126B6E9E42E90244CC2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAssetsMember_2C2BDB7D17C94126B6E9E42E90244CC2" xlink:to="lab_us-gaap_OtherAssetsMember_2C2BDB7D17C94126B6E9E42E90244CC2" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherLiabilitiesMember_F2B6DBE304168A7A1794E42EAFB5AA7A_terseLabel_en-US" xlink:label="lab_us-gaap_OtherLiabilitiesMember_F2B6DBE304168A7A1794E42EAFB5AA7A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Liabilities [Member]</link:label>
    <link:label id="lab_us-gaap_OtherLiabilitiesMember_F2B6DBE304168A7A1794E42EAFB5AA7A_label_en-US" xlink:label="lab_us-gaap_OtherLiabilitiesMember_F2B6DBE304168A7A1794E42EAFB5AA7A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Liabilities [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherLiabilitiesMember" xlink:label="loc_us-gaap_OtherLiabilitiesMember_F2B6DBE304168A7A1794E42EAFB5AA7A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherLiabilitiesMember_F2B6DBE304168A7A1794E42EAFB5AA7A" xlink:to="lab_us-gaap_OtherLiabilitiesMember_F2B6DBE304168A7A1794E42EAFB5AA7A" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongtermDebtTypeAxis_11798D142B5B895870BAA4DF4016BB9A_verboseLabel_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeAxis_11798D142B5B895870BAA4DF4016BB9A" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Long-term Debt, Type [Axis]</link:label>
    <link:label id="lab_us-gaap_LongtermDebtTypeAxis_11798D142B5B895870BAA4DF4016BB9A_label_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeAxis_11798D142B5B895870BAA4DF4016BB9A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Type [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_11798D142B5B895870BAA4DF4016BB9A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_11798D142B5B895870BAA4DF4016BB9A" xlink:to="lab_us-gaap_LongtermDebtTypeAxis_11798D142B5B895870BAA4DF4016BB9A" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongtermDebtTypeDomain_0F52E0F8637F3EE919C5A4DF4016456C_verboseLabel_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeDomain_0F52E0F8637F3EE919C5A4DF4016456C" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Long-term Debt, Type [Domain]</link:label>
    <link:label id="lab_us-gaap_LongtermDebtTypeDomain_0F52E0F8637F3EE919C5A4DF4016456C_label_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeDomain_0F52E0F8637F3EE919C5A4DF4016456C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Type [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_0F52E0F8637F3EE919C5A4DF4016456C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_0F52E0F8637F3EE919C5A4DF4016456C" xlink:to="lab_us-gaap_LongtermDebtTypeDomain_0F52E0F8637F3EE919C5A4DF4016456C" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongTermDebtMember_42EA32B40EC44AB14147A4DF4016BB6E_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtMember_42EA32B40EC44AB14147A4DF4016BB6E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-Term Debt [Member]</link:label>
    <link:label id="lab_us-gaap_LongTermDebtMember_42EA32B40EC44AB14147A4DF4016BB6E_label_en-US" xlink:label="lab_us-gaap_LongTermDebtMember_42EA32B40EC44AB14147A4DF4016BB6E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LongTermDebtMember" xlink:label="loc_us-gaap_LongTermDebtMember_42EA32B40EC44AB14147A4DF4016BB6E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtMember_42EA32B40EC44AB14147A4DF4016BB6E" xlink:to="lab_us-gaap_LongTermDebtMember_42EA32B40EC44AB14147A4DF4016BB6E" xlink:type="arc" />
    <link:label id="lab_us-gaap_DerivativesFairValueLineItems_3547BF0207583DCDC8A3A4DF40164BA3_verboseLabel_en-US" xlink:label="lab_us-gaap_DerivativesFairValueLineItems_3547BF0207583DCDC8A3A4DF40164BA3" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Derivatives, Fair Value [Line Items]</link:label>
    <link:label id="lab_us-gaap_DerivativesFairValueLineItems_3547BF0207583DCDC8A3A4DF40164BA3_label_en-US" xlink:label="lab_us-gaap_DerivativesFairValueLineItems_3547BF0207583DCDC8A3A4DF40164BA3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivatives, Fair Value [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DerivativesFairValueLineItems" xlink:label="loc_us-gaap_DerivativesFairValueLineItems_3547BF0207583DCDC8A3A4DF40164BA3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_3547BF0207583DCDC8A3A4DF40164BA3" xlink:to="lab_us-gaap_DerivativesFairValueLineItems_3547BF0207583DCDC8A3A4DF40164BA3" xlink:type="arc" />
    <link:label id="lab_us-gaap_ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAbstract_C61F649E5C10B1090222A4DF40168090_verboseLabel_en-US" xlink:label="lab_us-gaap_ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAbstract_C61F649E5C10B1090222A4DF40168090" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Derivatives not designated as hedging instruments</link:label>
    <link:label id="lab_us-gaap_ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAbstract_C61F649E5C10B1090222A4DF40168090_label_en-US" xlink:label="lab_us-gaap_ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAbstract_C61F649E5C10B1090222A4DF40168090" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Foreign Currency Derivative Instruments Not Designated as Hedging Instruments [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAbstract" xlink:label="loc_us-gaap_ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAbstract_C61F649E5C10B1090222A4DF40168090" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAbstract_C61F649E5C10B1090222A4DF40168090" xlink:to="lab_us-gaap_ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAbstract_C61F649E5C10B1090222A4DF40168090" xlink:type="arc" />
    <link:label id="lab_us-gaap_DerivativeFairValueOfDerivativeAsset_F6F3F36F774C8BC68852E43536B3DC9A_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeFairValueOfDerivativeAsset_F6F3F36F774C8BC68852E43536B3DC9A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Derivative Asset, Fair Value, Gross Asset</link:label>
    <link:label id="lab_us-gaap_DerivativeFairValueOfDerivativeAsset_F6F3F36F774C8BC68852E43536B3DC9A_label_en-US" xlink:label="lab_us-gaap_DerivativeFairValueOfDerivativeAsset_F6F3F36F774C8BC68852E43536B3DC9A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative Asset, Fair Value, Gross Asset</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeAsset" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_F6F3F36F774C8BC68852E43536B3DC9A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_F6F3F36F774C8BC68852E43536B3DC9A" xlink:to="lab_us-gaap_DerivativeFairValueOfDerivativeAsset_F6F3F36F774C8BC68852E43536B3DC9A" xlink:type="arc" />
    <link:label id="lab_us-gaap_DerivativeAssetsCurrent_83EE7A9A35072A6C2666E433C3D29F65_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeAssetsCurrent_83EE7A9A35072A6C2666E433C3D29F65" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Derivative Assets, Current</link:label>
    <link:label id="lab_us-gaap_DerivativeAssetsCurrent_83EE7A9A35072A6C2666E433C3D29F65_label_en-US" xlink:label="lab_us-gaap_DerivativeAssetsCurrent_83EE7A9A35072A6C2666E433C3D29F65" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative Assets, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DerivativeAssetsCurrent" xlink:label="loc_us-gaap_DerivativeAssetsCurrent_83EE7A9A35072A6C2666E433C3D29F65" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeAssetsCurrent_83EE7A9A35072A6C2666E433C3D29F65" xlink:to="lab_us-gaap_DerivativeAssetsCurrent_83EE7A9A35072A6C2666E433C3D29F65" xlink:type="arc" />
    <link:label id="lab_us-gaap_DerivativeFairValueOfDerivativeLiability_BDD1D8BDC7078D558058E43377C8841F_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeFairValueOfDerivativeLiability_BDD1D8BDC7078D558058E43377C8841F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Derivative Liability, Fair Value, Gross Liability</link:label>
    <link:label id="lab_us-gaap_DerivativeFairValueOfDerivativeLiability_BDD1D8BDC7078D558058E43377C8841F_label_en-US" xlink:label="lab_us-gaap_DerivativeFairValueOfDerivativeLiability_BDD1D8BDC7078D558058E43377C8841F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative Liability, Fair Value, Gross Liability</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeLiability" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_BDD1D8BDC7078D558058E43377C8841F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_BDD1D8BDC7078D558058E43377C8841F" xlink:to="lab_us-gaap_DerivativeFairValueOfDerivativeLiability_BDD1D8BDC7078D558058E43377C8841F" xlink:type="arc" />
    <link:label id="lab_us-gaap_DerivativeLiabilitiesCurrent_D484755E0F101EA9FE0EE434100A0AC0_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeLiabilitiesCurrent_D484755E0F101EA9FE0EE434100A0AC0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Derivative Liabilities, Current</link:label>
    <link:label id="lab_us-gaap_DerivativeLiabilitiesCurrent_D484755E0F101EA9FE0EE434100A0AC0_label_en-US" xlink:label="lab_us-gaap_DerivativeLiabilitiesCurrent_D484755E0F101EA9FE0EE434100A0AC0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative Liabilities, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DerivativeLiabilitiesCurrent" xlink:label="loc_us-gaap_DerivativeLiabilitiesCurrent_D484755E0F101EA9FE0EE434100A0AC0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeLiabilitiesCurrent_D484755E0F101EA9FE0EE434100A0AC0" xlink:to="lab_us-gaap_DerivativeLiabilitiesCurrent_D484755E0F101EA9FE0EE434100A0AC0" xlink:type="arc" />
    <link:label id="lab_us-gaap_NotionalAmountOfNetInvestmentHedgingInstrumentsTotalAbstract_C1F2E57B3BADBD397126A4DF4016A4BD_verboseLabel_en-US" xlink:label="lab_us-gaap_NotionalAmountOfNetInvestmentHedgingInstrumentsTotalAbstract_C1F2E57B3BADBD397126A4DF4016A4BD" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Nonderivative instruments designated as hedging instruments</link:label>
    <link:label id="lab_us-gaap_NotionalAmountOfNetInvestmentHedgingInstrumentsTotalAbstract_C1F2E57B3BADBD397126A4DF4016A4BD_label_en-US" xlink:label="lab_us-gaap_NotionalAmountOfNetInvestmentHedgingInstrumentsTotalAbstract_C1F2E57B3BADBD397126A4DF4016A4BD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Notional Amount of Net Investment Hedging Instruments, Total [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NotionalAmountOfNetInvestmentHedgingInstrumentsTotalAbstract" xlink:label="loc_us-gaap_NotionalAmountOfNetInvestmentHedgingInstrumentsTotalAbstract_C1F2E57B3BADBD397126A4DF4016A4BD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NotionalAmountOfNetInvestmentHedgingInstrumentsTotalAbstract_C1F2E57B3BADBD397126A4DF4016A4BD" xlink:to="lab_us-gaap_NotionalAmountOfNetInvestmentHedgingInstrumentsTotalAbstract_C1F2E57B3BADBD397126A4DF4016A4BD" xlink:type="arc" />
    <link:label id="lab_us-gaap_NotionalAmountOfNonderivativeInstrumentsDesignatedAsNetInvestmentHedges_B6A682F91BCAE25369F9A4DF4016E6EA_verboseLabel_en-US" xlink:label="lab_us-gaap_NotionalAmountOfNonderivativeInstrumentsDesignatedAsNetInvestmentHedges_B6A682F91BCAE25369F9A4DF4016E6EA" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Net investment hedge</link:label>
    <link:label id="lab_us-gaap_NotionalAmountOfNonderivativeInstrumentsDesignatedAsNetInvestmentHedges_B6A682F91BCAE25369F9A4DF4016E6EA_label_en-US" xlink:label="lab_us-gaap_NotionalAmountOfNonderivativeInstrumentsDesignatedAsNetInvestmentHedges_B6A682F91BCAE25369F9A4DF4016E6EA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Notional Amount of Nonderivative Instruments Designated as Net Investment Hedges</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NotionalAmountOfNonderivativeInstrumentsDesignatedAsNetInvestmentHedges" xlink:label="loc_us-gaap_NotionalAmountOfNonderivativeInstrumentsDesignatedAsNetInvestmentHedges_B6A682F91BCAE25369F9A4DF4016E6EA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NotionalAmountOfNonderivativeInstrumentsDesignatedAsNetInvestmentHedges_B6A682F91BCAE25369F9A4DF4016E6EA" xlink:to="lab_us-gaap_NotionalAmountOfNonderivativeInstrumentsDesignatedAsNetInvestmentHedges_B6A682F91BCAE25369F9A4DF4016E6EA" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_0E24820C13633C57E271A4DF38B74F92_label_en-US" xlink:label="lab_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_0E24820C13633C57E271A4DF38B74F92" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill and Intangible Assets Disclosure [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_0E24820C13633C57E271A4DF38B74F92" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_0E24820C13633C57E271A4DF38B74F92" xlink:to="lab_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_0E24820C13633C57E271A4DF38B74F92" xlink:type="arc" />
    <link:label id="lab_pll_ScheduleOfGoodwillAllocatedByReportableSegmentTable_2DAFBCAE2A63E4B55D1AA4DF38B77723_verboseLabel_en-US" xlink:label="lab_pll_ScheduleOfGoodwillAllocatedByReportableSegmentTable_2DAFBCAE2A63E4B55D1AA4DF38B77723" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Goodwill Allocated by Reportable Segment [Table]</link:label>
    <link:label id="lab_pll_ScheduleOfGoodwillAllocatedByReportableSegmentTable_2DAFBCAE2A63E4B55D1AA4DF38B77723_label_en-US" xlink:label="lab_pll_ScheduleOfGoodwillAllocatedByReportableSegmentTable_2DAFBCAE2A63E4B55D1AA4DF38B77723" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Goodwill Allocated by Reportable Segment [Table]</link:label>
    <link:label id="lab_pll_ScheduleOfGoodwillAllocatedByReportableSegmentTable_2DAFBCAE2A63E4B55D1AA4DF38B77723_documentation_en-US" xlink:label="lab_pll_ScheduleOfGoodwillAllocatedByReportableSegmentTable_2DAFBCAE2A63E4B55D1AA4DF38B77723" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Schedule of Goodwill Allocated by Reportable Segment [Table]</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_ScheduleOfGoodwillAllocatedByReportableSegmentTable" xlink:label="loc_pll_ScheduleOfGoodwillAllocatedByReportableSegmentTable_2DAFBCAE2A63E4B55D1AA4DF38B77723" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_ScheduleOfGoodwillAllocatedByReportableSegmentTable_2DAFBCAE2A63E4B55D1AA4DF38B77723" xlink:to="lab_pll_ScheduleOfGoodwillAllocatedByReportableSegmentTable_2DAFBCAE2A63E4B55D1AA4DF38B77723" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementBusinessSegmentsAxis_A19D7EAEBAB4C1A21F7EA4DF38B8AF2A_verboseLabel_en-US" xlink:label="lab_us-gaap_StatementBusinessSegmentsAxis_A19D7EAEBAB4C1A21F7EA4DF38B8AF2A" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Statement, Business Segments [Axis]</link:label>
    <link:label id="lab_us-gaap_StatementBusinessSegmentsAxis_A19D7EAEBAB4C1A21F7EA4DF38B8AF2A_label_en-US" xlink:label="lab_us-gaap_StatementBusinessSegmentsAxis_A19D7EAEBAB4C1A21F7EA4DF38B8AF2A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement, Business Segments [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_A19D7EAEBAB4C1A21F7EA4DF38B8AF2A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_A19D7EAEBAB4C1A21F7EA4DF38B8AF2A" xlink:to="lab_us-gaap_StatementBusinessSegmentsAxis_A19D7EAEBAB4C1A21F7EA4DF38B8AF2A" xlink:type="arc" />
    <link:label id="lab_us-gaap_SegmentDomain_36E0C7297BFD21FD506FA4DF38B8DF51_verboseLabel_en-US" xlink:label="lab_us-gaap_SegmentDomain_36E0C7297BFD21FD506FA4DF38B8DF51" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Segment [Domain]</link:label>
    <link:label id="lab_us-gaap_SegmentDomain_36E0C7297BFD21FD506FA4DF38B8DF51_label_en-US" xlink:label="lab_us-gaap_SegmentDomain_36E0C7297BFD21FD506FA4DF38B8DF51" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segment [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_36E0C7297BFD21FD506FA4DF38B8DF51" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SegmentDomain_36E0C7297BFD21FD506FA4DF38B8DF51" xlink:to="lab_us-gaap_SegmentDomain_36E0C7297BFD21FD506FA4DF38B8DF51" xlink:type="arc" />
    <link:label id="lab_pll_LifeSciencesMember_1F34DEA710D86D7BF6B0A4DF38B892F1_terseLabel_en-US" xlink:label="lab_pll_LifeSciencesMember_1F34DEA710D86D7BF6B0A4DF38B892F1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Life Sciences [Member]</link:label>
    <link:label id="lab_pll_LifeSciencesMember_1F34DEA710D86D7BF6B0A4DF38B892F1_label_en-US" xlink:label="lab_pll_LifeSciencesMember_1F34DEA710D86D7BF6B0A4DF38B892F1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Life Sciences [Member]</link:label>
    <link:label id="lab_pll_LifeSciencesMember_1F34DEA710D86D7BF6B0A4DF38B892F1_documentation_en-US" xlink:label="lab_pll_LifeSciencesMember_1F34DEA710D86D7BF6B0A4DF38B892F1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Life Sciences.</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_LifeSciencesMember" xlink:label="loc_pll_LifeSciencesMember_1F34DEA710D86D7BF6B0A4DF38B892F1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_LifeSciencesMember_1F34DEA710D86D7BF6B0A4DF38B892F1" xlink:to="lab_pll_LifeSciencesMember_1F34DEA710D86D7BF6B0A4DF38B892F1" xlink:type="arc" />
    <link:label id="lab_pll_IndustrialMember_0C60C12BFC614B40E6A8A4DF38B895BE_terseLabel_en-US" xlink:label="lab_pll_IndustrialMember_0C60C12BFC614B40E6A8A4DF38B895BE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Industrial [Member]</link:label>
    <link:label id="lab_pll_IndustrialMember_0C60C12BFC614B40E6A8A4DF38B895BE_label_en-US" xlink:label="lab_pll_IndustrialMember_0C60C12BFC614B40E6A8A4DF38B895BE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Industrial [Member]</link:label>
    <link:label id="lab_pll_IndustrialMember_0C60C12BFC614B40E6A8A4DF38B895BE_documentation_en-US" xlink:label="lab_pll_IndustrialMember_0C60C12BFC614B40E6A8A4DF38B895BE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Industrial member.</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_IndustrialMember" xlink:label="loc_pll_IndustrialMember_0C60C12BFC614B40E6A8A4DF38B895BE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_IndustrialMember_0C60C12BFC614B40E6A8A4DF38B895BE" xlink:to="lab_pll_IndustrialMember_0C60C12BFC614B40E6A8A4DF38B895BE" xlink:type="arc" />
    <link:label id="lab_pll_GoodwillAllocatedByReportableSegmentLineItems_17FB003E93ECA9530B0EA4DF38B81A6C_verboseLabel_en-US" xlink:label="lab_pll_GoodwillAllocatedByReportableSegmentLineItems_17FB003E93ECA9530B0EA4DF38B81A6C" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Goodwill Allocated by Reportable Segment [Line Items]</link:label>
    <link:label id="lab_pll_GoodwillAllocatedByReportableSegmentLineItems_17FB003E93ECA9530B0EA4DF38B81A6C_label_en-US" xlink:label="lab_pll_GoodwillAllocatedByReportableSegmentLineItems_17FB003E93ECA9530B0EA4DF38B81A6C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill Allocated by Reportable Segment [Line Items]</link:label>
    <link:label id="lab_pll_GoodwillAllocatedByReportableSegmentLineItems_17FB003E93ECA9530B0EA4DF38B81A6C_documentation_en-US" xlink:label="lab_pll_GoodwillAllocatedByReportableSegmentLineItems_17FB003E93ECA9530B0EA4DF38B81A6C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Goodwill Allocated by Reportable Segment [Line Items]</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_GoodwillAllocatedByReportableSegmentLineItems" xlink:label="loc_pll_GoodwillAllocatedByReportableSegmentLineItems_17FB003E93ECA9530B0EA4DF38B81A6C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_GoodwillAllocatedByReportableSegmentLineItems_17FB003E93ECA9530B0EA4DF38B81A6C" xlink:to="lab_pll_GoodwillAllocatedByReportableSegmentLineItems_17FB003E93ECA9530B0EA4DF38B81A6C" xlink:type="arc" />
    <link:label id="lab_us-gaap_Goodwill_B7CAF8AA339917CF1639A4DF38B8EC48_terseLabel_en-US" xlink:label="lab_us-gaap_Goodwill_B7CAF8AA339917CF1639A4DF38B8EC48" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Goodwill</link:label>
    <link:label id="lab_us-gaap_Goodwill_B7CAF8AA339917CF1639A4DF38B8EC48_label_en-US" xlink:label="lab_us-gaap_Goodwill_B7CAF8AA339917CF1639A4DF38B8EC48" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_B7CAF8AA339917CF1639A4DF38B8EC48" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Goodwill_B7CAF8AA339917CF1639A4DF38B8EC48" xlink:to="lab_us-gaap_Goodwill_B7CAF8AA339917CF1639A4DF38B8EC48" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementTable_E659E2CA476A66A110F8A4DF393ECDD7_verboseLabel_en-US" xlink:label="lab_us-gaap_StatementTable_E659E2CA476A66A110F8A4DF393ECDD7" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Statement [Table]</link:label>
    <link:label id="lab_us-gaap_StatementTable_E659E2CA476A66A110F8A4DF393ECDD7_label_en-US" xlink:label="lab_us-gaap_StatementTable_E659E2CA476A66A110F8A4DF393ECDD7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_E659E2CA476A66A110F8A4DF393ECDD7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementTable_E659E2CA476A66A110F8A4DF393ECDD7" xlink:to="lab_us-gaap_StatementTable_E659E2CA476A66A110F8A4DF393ECDD7" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessAcquisitionAxis_958BF7504F99071FBB5431B0B5569F4E_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionAxis_958BF7504F99071FBB5431B0B5569F4E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Business Acquisition [Axis]</link:label>
    <link:label id="lab_us-gaap_BusinessAcquisitionAxis_958BF7504F99071FBB5431B0B5569F4E_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionAxis_958BF7504F99071FBB5431B0B5569F4E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Acquisition [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_958BF7504F99071FBB5431B0B5569F4E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_958BF7504F99071FBB5431B0B5569F4E" xlink:to="lab_us-gaap_BusinessAcquisitionAxis_958BF7504F99071FBB5431B0B5569F4E" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessAcquisitionAcquireeDomain_C0E7F4688A45B9379D1631B11D803795_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionAcquireeDomain_C0E7F4688A45B9379D1631B11D803795" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Business Acquisition, Acquiree [Domain]</link:label>
    <link:label id="lab_us-gaap_BusinessAcquisitionAcquireeDomain_C0E7F4688A45B9379D1631B11D803795_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionAcquireeDomain_C0E7F4688A45B9379D1631B11D803795" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Acquisition, Acquiree [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_C0E7F4688A45B9379D1631B11D803795" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_C0E7F4688A45B9379D1631B11D803795" xlink:to="lab_us-gaap_BusinessAcquisitionAcquireeDomain_C0E7F4688A45B9379D1631B11D803795" xlink:type="arc" />
    <link:label id="lab_pll_BrazilAcquisitionMember_C8E2BDB446F7DF2B3C1831B1DC2C8E01_terseLabel_en-US" xlink:label="lab_pll_BrazilAcquisitionMember_C8E2BDB446F7DF2B3C1831B1DC2C8E01" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Brazil Acquisition [Member]</link:label>
    <link:label id="lab_pll_BrazilAcquisitionMember_C8E2BDB446F7DF2B3C1831B1DC2C8E01_label_en-US" xlink:label="lab_pll_BrazilAcquisitionMember_C8E2BDB446F7DF2B3C1831B1DC2C8E01" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Brazil Acquisition [Member]</link:label>
    <link:label id="lab_pll_BrazilAcquisitionMember_C8E2BDB446F7DF2B3C1831B1DC2C8E01_documentation_en-US" xlink:label="lab_pll_BrazilAcquisitionMember_C8E2BDB446F7DF2B3C1831B1DC2C8E01" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Brazil Acquisition [Member]</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_BrazilAcquisitionMember" xlink:label="loc_pll_BrazilAcquisitionMember_C8E2BDB446F7DF2B3C1831B1DC2C8E01" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_BrazilAcquisitionMember_C8E2BDB446F7DF2B3C1831B1DC2C8E01" xlink:to="lab_pll_BrazilAcquisitionMember_C8E2BDB446F7DF2B3C1831B1DC2C8E01" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementLineItems_5123DD8B61C4E7B821ACA4DF393E963C_verboseLabel_en-US" xlink:label="lab_us-gaap_StatementLineItems_5123DD8B61C4E7B821ACA4DF393E963C" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Statement [Line Items]</link:label>
    <link:label id="lab_us-gaap_StatementLineItems_5123DD8B61C4E7B821ACA4DF393E963C_label_en-US" xlink:label="lab_us-gaap_StatementLineItems_5123DD8B61C4E7B821ACA4DF393E963C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_5123DD8B61C4E7B821ACA4DF393E963C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementLineItems_5123DD8B61C4E7B821ACA4DF393E963C" xlink:to="lab_us-gaap_StatementLineItems_5123DD8B61C4E7B821ACA4DF393E963C" xlink:type="arc" />
    <link:label id="lab_us-gaap_AcquiredFiniteLivedIntangibleAssetAmount_3C10D07E954FA068A5EE31AAF25EEBD4_terseLabel_en-US" xlink:label="lab_us-gaap_AcquiredFiniteLivedIntangibleAssetAmount_3C10D07E954FA068A5EE31AAF25EEBD4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Acquired Finite-lived Intangible Asset, Approximate Value</link:label>
    <link:label id="lab_us-gaap_AcquiredFiniteLivedIntangibleAssetAmount_3C10D07E954FA068A5EE31AAF25EEBD4_label_en-US" xlink:label="lab_us-gaap_AcquiredFiniteLivedIntangibleAssetAmount_3C10D07E954FA068A5EE31AAF25EEBD4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquired Finite-lived Intangible Asset, Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetAmount" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetAmount_3C10D07E954FA068A5EE31AAF25EEBD4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetAmount_3C10D07E954FA068A5EE31AAF25EEBD4" xlink:to="lab_us-gaap_AcquiredFiniteLivedIntangibleAssetAmount_3C10D07E954FA068A5EE31AAF25EEBD4" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillAcquiredDuringPeriod_99C8E3DEC08811790B4031AE198A4FCC_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillAcquiredDuringPeriod_99C8E3DEC08811790B4031AE198A4FCC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Goodwill, Acquired During Period, Approximate Value</link:label>
    <link:label id="lab_us-gaap_GoodwillAcquiredDuringPeriod_99C8E3DEC08811790B4031AE198A4FCC_label_en-US" xlink:label="lab_us-gaap_GoodwillAcquiredDuringPeriod_99C8E3DEC08811790B4031AE198A4FCC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill, Acquired During Period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_GoodwillAcquiredDuringPeriod" xlink:label="loc_us-gaap_GoodwillAcquiredDuringPeriod_99C8E3DEC08811790B4031AE198A4FCC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillAcquiredDuringPeriod_99C8E3DEC08811790B4031AE198A4FCC" xlink:to="lab_us-gaap_GoodwillAcquiredDuringPeriod_99C8E3DEC08811790B4031AE198A4FCC" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpense_A052341A0D7D8D1D8CDFA4DF393E4D94_verboseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpense_A052341A0D7D8D1D8CDFA4DF393E4D94" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Amortization expense for Intangible assets</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpense_A052341A0D7D8D1D8CDFA4DF393E4D94_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpense_A052341A0D7D8D1D8CDFA4DF393E4D94" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpense" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpense_A052341A0D7D8D1D8CDFA4DF393E4D94" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpense_A052341A0D7D8D1D8CDFA4DF393E4D94" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpense_A052341A0D7D8D1D8CDFA4DF393E4D94" xlink:type="arc" />
    <link:label id="lab_us-gaap_FutureAmortizationExpenseRemainderOfFiscalYear_225F39B9B1C505A1A3FAA4DF393EB073_verboseLabel_en-US" xlink:label="lab_us-gaap_FutureAmortizationExpenseRemainderOfFiscalYear_225F39B9B1C505A1A3FAA4DF393EB073" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Estimated amortization expense for intangible assets, remainder of 2012</link:label>
    <link:label id="lab_us-gaap_FutureAmortizationExpenseRemainderOfFiscalYear_225F39B9B1C505A1A3FAA4DF393EB073_label_en-US" xlink:label="lab_us-gaap_FutureAmortizationExpenseRemainderOfFiscalYear_225F39B9B1C505A1A3FAA4DF393EB073" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Future Amortization Expense, Remainder of Fiscal Year</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FutureAmortizationExpenseRemainderOfFiscalYear" xlink:label="loc_us-gaap_FutureAmortizationExpenseRemainderOfFiscalYear_225F39B9B1C505A1A3FAA4DF393EB073" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FutureAmortizationExpenseRemainderOfFiscalYear_225F39B9B1C505A1A3FAA4DF393EB073" xlink:to="lab_us-gaap_FutureAmortizationExpenseRemainderOfFiscalYear_225F39B9B1C505A1A3FAA4DF393EB073" xlink:type="arc" />
    <link:label id="lab_us-gaap_FutureAmortizationExpenseYearOne_A3D75D15301DA59C0F4AA4DF393EEDEE_verboseLabel_en-US" xlink:label="lab_us-gaap_FutureAmortizationExpenseYearOne_A3D75D15301DA59C0F4AA4DF393EEDEE" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Estimated amortization expense for intangible assets, 2013</link:label>
    <link:label id="lab_us-gaap_FutureAmortizationExpenseYearOne_A3D75D15301DA59C0F4AA4DF393EEDEE_label_en-US" xlink:label="lab_us-gaap_FutureAmortizationExpenseYearOne_A3D75D15301DA59C0F4AA4DF393EEDEE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Future Amortization Expense, Year One</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FutureAmortizationExpenseYearOne" xlink:label="loc_us-gaap_FutureAmortizationExpenseYearOne_A3D75D15301DA59C0F4AA4DF393EEDEE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FutureAmortizationExpenseYearOne_A3D75D15301DA59C0F4AA4DF393EEDEE" xlink:to="lab_us-gaap_FutureAmortizationExpenseYearOne_A3D75D15301DA59C0F4AA4DF393EEDEE" xlink:type="arc" />
    <link:label id="lab_us-gaap_FutureAmortizationExpenseYearTwo_402489A591D3211ED4ABA4DF393ED441_verboseLabel_en-US" xlink:label="lab_us-gaap_FutureAmortizationExpenseYearTwo_402489A591D3211ED4ABA4DF393ED441" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Estimated amortization expense for intangible assets, 2014</link:label>
    <link:label id="lab_us-gaap_FutureAmortizationExpenseYearTwo_402489A591D3211ED4ABA4DF393ED441_label_en-US" xlink:label="lab_us-gaap_FutureAmortizationExpenseYearTwo_402489A591D3211ED4ABA4DF393ED441" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Future Amortization Expense, Year Two</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FutureAmortizationExpenseYearTwo" xlink:label="loc_us-gaap_FutureAmortizationExpenseYearTwo_402489A591D3211ED4ABA4DF393ED441" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FutureAmortizationExpenseYearTwo_402489A591D3211ED4ABA4DF393ED441" xlink:to="lab_us-gaap_FutureAmortizationExpenseYearTwo_402489A591D3211ED4ABA4DF393ED441" xlink:type="arc" />
    <link:label id="lab_us-gaap_FutureAmortizationExpenseYearThree_B395DB011BA954A190CEA4DF393EB1A5_verboseLabel_en-US" xlink:label="lab_us-gaap_FutureAmortizationExpenseYearThree_B395DB011BA954A190CEA4DF393EB1A5" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Estimated amortization expense for intangible assets, 2015</link:label>
    <link:label id="lab_us-gaap_FutureAmortizationExpenseYearThree_B395DB011BA954A190CEA4DF393EB1A5_label_en-US" xlink:label="lab_us-gaap_FutureAmortizationExpenseYearThree_B395DB011BA954A190CEA4DF393EB1A5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Future Amortization Expense, Year Three</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FutureAmortizationExpenseYearThree" xlink:label="loc_us-gaap_FutureAmortizationExpenseYearThree_B395DB011BA954A190CEA4DF393EB1A5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FutureAmortizationExpenseYearThree_B395DB011BA954A190CEA4DF393EB1A5" xlink:to="lab_us-gaap_FutureAmortizationExpenseYearThree_B395DB011BA954A190CEA4DF393EB1A5" xlink:type="arc" />
    <link:label id="lab_us-gaap_FutureAmortizationExpenseYearFour_8353E676F458C7399D0FA4DF393ED146_verboseLabel_en-US" xlink:label="lab_us-gaap_FutureAmortizationExpenseYearFour_8353E676F458C7399D0FA4DF393ED146" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Estimated amortization expense for intangible assets, 2016</link:label>
    <link:label id="lab_us-gaap_FutureAmortizationExpenseYearFour_8353E676F458C7399D0FA4DF393ED146_label_en-US" xlink:label="lab_us-gaap_FutureAmortizationExpenseYearFour_8353E676F458C7399D0FA4DF393ED146" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Future Amortization Expense, Year Four</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FutureAmortizationExpenseYearFour" xlink:label="loc_us-gaap_FutureAmortizationExpenseYearFour_8353E676F458C7399D0FA4DF393ED146" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FutureAmortizationExpenseYearFour_8353E676F458C7399D0FA4DF393ED146" xlink:to="lab_us-gaap_FutureAmortizationExpenseYearFour_8353E676F458C7399D0FA4DF393ED146" xlink:type="arc" />
    <link:label id="lab_us-gaap_FutureAmortizationExpenseYearFive_F21FBA2B91C5B5664DBDA4DF393E5111_verboseLabel_en-US" xlink:label="lab_us-gaap_FutureAmortizationExpenseYearFive_F21FBA2B91C5B5664DBDA4DF393E5111" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Estimated amortization expense for intangible assets, 2017</link:label>
    <link:label id="lab_us-gaap_FutureAmortizationExpenseYearFive_F21FBA2B91C5B5664DBDA4DF393E5111_label_en-US" xlink:label="lab_us-gaap_FutureAmortizationExpenseYearFive_F21FBA2B91C5B5664DBDA4DF393E5111" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Future Amortization Expense, Year Five</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FutureAmortizationExpenseYearFive" xlink:label="loc_us-gaap_FutureAmortizationExpenseYearFive_F21FBA2B91C5B5664DBDA4DF393E5111" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FutureAmortizationExpenseYearFive_F21FBA2B91C5B5664DBDA4DF393E5111" xlink:to="lab_us-gaap_FutureAmortizationExpenseYearFive_F21FBA2B91C5B5664DBDA4DF393E5111" xlink:type="arc" />
    <link:label id="lab_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract_D4B2110B431C8401DF73A4DF3F1A5564_label_en-US" xlink:label="lab_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract_D4B2110B431C8401DF73A4DF3F1A5564" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investments, Debt and Equity Securities [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract" xlink:label="loc_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract_D4B2110B431C8401DF73A4DF3F1A5564" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract_D4B2110B431C8401DF73A4DF3F1A5564" xlink:to="lab_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract_D4B2110B431C8401DF73A4DF3F1A5564" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_695C753D3B2B74A291A3A4DF3F1A407B_verboseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_695C753D3B2B74A291A3A4DF3F1A407B" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Available-for-sale Securities [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_695C753D3B2B74A291A3A4DF3F1A407B_label_en-US" xlink:label="lab_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_695C753D3B2B74A291A3A4DF3F1A407B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Available-for-sale Securities [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesTable" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_695C753D3B2B74A291A3A4DF3F1A407B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_695C753D3B2B74A291A3A4DF3F1A407B" xlink:to="lab_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_695C753D3B2B74A291A3A4DF3F1A407B" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfAvailableForSaleSecuritiesMajorTypesOfDebtAndEquitySecuritiesAxis_13EB626C62F55867EC03A4DF3F1AB0C0_verboseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfAvailableForSaleSecuritiesMajorTypesOfDebtAndEquitySecuritiesAxis_13EB626C62F55867EC03A4DF3F1AB0C0" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Available-for-sale Securities, Major Types of Debt and Equity Securities [Axis]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfAvailableForSaleSecuritiesMajorTypesOfDebtAndEquitySecuritiesAxis_13EB626C62F55867EC03A4DF3F1AB0C0_label_en-US" xlink:label="lab_us-gaap_ScheduleOfAvailableForSaleSecuritiesMajorTypesOfDebtAndEquitySecuritiesAxis_13EB626C62F55867EC03A4DF3F1AB0C0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Available-for-sale Securities, Major Types of Debt and Equity Securities [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesMajorTypesOfDebtAndEquitySecuritiesAxis" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesMajorTypesOfDebtAndEquitySecuritiesAxis_13EB626C62F55867EC03A4DF3F1AB0C0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesMajorTypesOfDebtAndEquitySecuritiesAxis_13EB626C62F55867EC03A4DF3F1AB0C0" xlink:to="lab_us-gaap_ScheduleOfAvailableForSaleSecuritiesMajorTypesOfDebtAndEquitySecuritiesAxis_13EB626C62F55867EC03A4DF3F1AB0C0" xlink:type="arc" />
    <link:label id="lab_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_D63461C99E6E6FE39363C68EA2B87741_terseLabel_en-US" xlink:label="lab_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_D63461C99E6E6FE39363C68EA2B87741" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Major Types of Debt and Equity Securities [Domain]</link:label>
    <link:label id="lab_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_D63461C99E6E6FE39363C68EA2B87741_label_en-US" xlink:label="lab_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_D63461C99E6E6FE39363C68EA2B87741" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Major Types of Debt and Equity Securities [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain" xlink:label="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_D63461C99E6E6FE39363C68EA2B87741" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_D63461C99E6E6FE39363C68EA2B87741" xlink:to="lab_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_D63461C99E6E6FE39363C68EA2B87741" xlink:type="arc" />
    <link:label id="lab_us-gaap_CorporateDebtSecuritiesMember_995F749C30B4E5B1BC81A4DF3F1BD6CE_verboseLabel_en-US" xlink:label="lab_us-gaap_CorporateDebtSecuritiesMember_995F749C30B4E5B1BC81A4DF3F1BD6CE" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Corporate Debt Securities [Member]</link:label>
    <link:label id="lab_us-gaap_CorporateDebtSecuritiesMember_995F749C30B4E5B1BC81A4DF3F1BD6CE_label_en-US" xlink:label="lab_us-gaap_CorporateDebtSecuritiesMember_995F749C30B4E5B1BC81A4DF3F1BD6CE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Corporate Debt Securities [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CorporateDebtSecuritiesMember" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_995F749C30B4E5B1BC81A4DF3F1BD6CE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CorporateDebtSecuritiesMember_995F749C30B4E5B1BC81A4DF3F1BD6CE" xlink:to="lab_us-gaap_CorporateDebtSecuritiesMember_995F749C30B4E5B1BC81A4DF3F1BD6CE" xlink:type="arc" />
    <link:label id="lab_us-gaap_USTreasurySecuritiesMember_5425197782A9E309AF6AA4DF3F1BCC4E_verboseLabel_en-US" xlink:label="lab_us-gaap_USTreasurySecuritiesMember_5425197782A9E309AF6AA4DF3F1BCC4E" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">U.S. Treasury [Member]</link:label>
    <link:label id="lab_us-gaap_USTreasurySecuritiesMember_5425197782A9E309AF6AA4DF3F1BCC4E_label_en-US" xlink:label="lab_us-gaap_USTreasurySecuritiesMember_5425197782A9E309AF6AA4DF3F1BCC4E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">US Treasury Securities [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_USTreasurySecuritiesMember" xlink:label="loc_us-gaap_USTreasurySecuritiesMember_5425197782A9E309AF6AA4DF3F1BCC4E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_USTreasurySecuritiesMember_5425197782A9E309AF6AA4DF3F1BCC4E" xlink:to="lab_us-gaap_USTreasurySecuritiesMember_5425197782A9E309AF6AA4DF3F1BCC4E" xlink:type="arc" />
    <link:label id="lab_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_DAB8C6B30C67C5DCFE9EA4DF3F1B2E42_verboseLabel_en-US" xlink:label="lab_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_DAB8C6B30C67C5DCFE9EA4DF3F1B2E42" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Federal agency [Member]</link:label>
    <link:label id="lab_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_DAB8C6B30C67C5DCFE9EA4DF3F1B2E42_label_en-US" xlink:label="lab_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_DAB8C6B30C67C5DCFE9EA4DF3F1B2E42" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">US Government Agencies Debt Securities [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_USGovernmentAgenciesDebtSecuritiesMember" xlink:label="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_DAB8C6B30C67C5DCFE9EA4DF3F1B2E42" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_DAB8C6B30C67C5DCFE9EA4DF3F1B2E42" xlink:to="lab_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_DAB8C6B30C67C5DCFE9EA4DF3F1B2E42" xlink:type="arc" />
    <link:label id="lab_us-gaap_MortgageBackedSecuritiesMember_CD8820C4392C22D0AF85A4DF3F1BF261_verboseLabel_en-US" xlink:label="lab_us-gaap_MortgageBackedSecuritiesMember_CD8820C4392C22D0AF85A4DF3F1BF261" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Mortgage-backed [Member]</link:label>
    <link:label id="lab_us-gaap_MortgageBackedSecuritiesMember_CD8820C4392C22D0AF85A4DF3F1BF261_label_en-US" xlink:label="lab_us-gaap_MortgageBackedSecuritiesMember_CD8820C4392C22D0AF85A4DF3F1BF261" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Collateralized Mortgage Backed Securities [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_MortgageBackedSecuritiesMember" xlink:label="loc_us-gaap_MortgageBackedSecuritiesMember_CD8820C4392C22D0AF85A4DF3F1BF261" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MortgageBackedSecuritiesMember_CD8820C4392C22D0AF85A4DF3F1BF261" xlink:to="lab_us-gaap_MortgageBackedSecuritiesMember_CD8820C4392C22D0AF85A4DF3F1BF261" xlink:type="arc" />
    <link:label id="lab_us-gaap_USStatesAndPoliticalSubdivisionsMember_1404A4A8C9867D3D6CA2A4DF3F1B65ED_verboseLabel_en-US" xlink:label="lab_us-gaap_USStatesAndPoliticalSubdivisionsMember_1404A4A8C9867D3D6CA2A4DF3F1B65ED" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Municipal government [Member]</link:label>
    <link:label id="lab_us-gaap_USStatesAndPoliticalSubdivisionsMember_1404A4A8C9867D3D6CA2A4DF3F1B65ED_label_en-US" xlink:label="lab_us-gaap_USStatesAndPoliticalSubdivisionsMember_1404A4A8C9867D3D6CA2A4DF3F1B65ED" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">US States and Political Subdivisions Debt Securities [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_USStatesAndPoliticalSubdivisionsMember" xlink:label="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_1404A4A8C9867D3D6CA2A4DF3F1B65ED" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_1404A4A8C9867D3D6CA2A4DF3F1B65ED" xlink:to="lab_us-gaap_USStatesAndPoliticalSubdivisionsMember_1404A4A8C9867D3D6CA2A4DF3F1B65ED" xlink:type="arc" />
    <link:label id="lab_us-gaap_EquitySecuritiesMember_F8EFB870608BEBE0204FA4DF3F1B9234_verboseLabel_en-US" xlink:label="lab_us-gaap_EquitySecuritiesMember_F8EFB870608BEBE0204FA4DF3F1B9234" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Equity Securities [Member]</link:label>
    <link:label id="lab_us-gaap_EquitySecuritiesMember_F8EFB870608BEBE0204FA4DF3F1B9234_label_en-US" xlink:label="lab_us-gaap_EquitySecuritiesMember_F8EFB870608BEBE0204FA4DF3F1B9234" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity Securities [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_EquitySecuritiesMember" xlink:label="loc_us-gaap_EquitySecuritiesMember_F8EFB870608BEBE0204FA4DF3F1B9234" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EquitySecuritiesMember_F8EFB870608BEBE0204FA4DF3F1B9234" xlink:to="lab_us-gaap_EquitySecuritiesMember_F8EFB870608BEBE0204FA4DF3F1B9234" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_BEE4AF69DF05554ACD6CC68CA932C58E_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_BEE4AF69DF05554ACD6CC68CA932C58E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Available-for-sale Securities [Line Items]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_BEE4AF69DF05554ACD6CC68CA932C58E_label_en-US" xlink:label="lab_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_BEE4AF69DF05554ACD6CC68CA932C58E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Available-for-sale Securities [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_BEE4AF69DF05554ACD6CC68CA932C58E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_BEE4AF69DF05554ACD6CC68CA932C58E" xlink:to="lab_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_BEE4AF69DF05554ACD6CC68CA932C58E" xlink:type="arc" />
    <link:label id="lab_us-gaap_AvailableForSaleEquitySecuritiesAmortizedCostBasis_904739F246D2171377D8A4DF3F1BD643_verboseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleEquitySecuritiesAmortizedCostBasis_904739F246D2171377D8A4DF3F1BD643" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Equity Securities Amortized Cost Basis</link:label>
    <link:label id="lab_us-gaap_AvailableForSaleEquitySecuritiesAmortizedCostBasis_904739F246D2171377D8A4DF3F1BD643_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleEquitySecuritiesAmortizedCostBasis_904739F246D2171377D8A4DF3F1BD643" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Available-for-sale Equity Securities, Amortized Cost Basis</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleEquitySecuritiesAmortizedCostBasis" xlink:label="loc_us-gaap_AvailableForSaleEquitySecuritiesAmortizedCostBasis_904739F246D2171377D8A4DF3F1BD643" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleEquitySecuritiesAmortizedCostBasis_904739F246D2171377D8A4DF3F1BD643" xlink:to="lab_us-gaap_AvailableForSaleEquitySecuritiesAmortizedCostBasis_904739F246D2171377D8A4DF3F1BD643" xlink:type="arc" />
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostAbstract_E03145BBEDA5831D5A27A4DF3F1B641E_verboseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostAbstract_E03145BBEDA5831D5A27A4DF3F1B641E" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Cost/Amortized Cost Basis</link:label>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostAbstract_E03145BBEDA5831D5A27A4DF3F1B641E_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostAbstract_E03145BBEDA5831D5A27A4DF3F1B641E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Available-for-sale Securities, Debt Maturities, Amortized Cost Basis [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostAbstract" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostAbstract_E03145BBEDA5831D5A27A4DF3F1B641E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostAbstract_E03145BBEDA5831D5A27A4DF3F1B641E" xlink:to="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostAbstract_E03145BBEDA5831D5A27A4DF3F1B641E" xlink:type="arc" />
    <link:label id="lab_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_B191A5FEDDF81E3FBAF4A4DF3F1BC593_verboseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_B191A5FEDDF81E3FBAF4A4DF3F1BC593" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Securities</link:label>
    <link:label id="lab_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_B191A5FEDDF81E3FBAF4A4DF3F1BC593_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_B191A5FEDDF81E3FBAF4A4DF3F1BC593" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Available-for-sale Debt Securities, Amortized Cost Basis</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_B191A5FEDDF81E3FBAF4A4DF3F1BC593" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_B191A5FEDDF81E3FBAF4A4DF3F1BC593" xlink:to="lab_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_B191A5FEDDF81E3FBAF4A4DF3F1BC593" xlink:type="arc" />
    <link:label id="lab_pll_AvailableForSaleSecuritiesDebtSecuritiesFairValueAbstract_83E44986B2F80D8F00E7A4DF3F1B3DF6_verboseLabel_en-US" xlink:label="lab_pll_AvailableForSaleSecuritiesDebtSecuritiesFairValueAbstract_83E44986B2F80D8F00E7A4DF3F1B3DF6" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Fair Value</link:label>
    <link:label id="lab_pll_AvailableForSaleSecuritiesDebtSecuritiesFairValueAbstract_83E44986B2F80D8F00E7A4DF3F1B3DF6_label_en-US" xlink:label="lab_pll_AvailableForSaleSecuritiesDebtSecuritiesFairValueAbstract_83E44986B2F80D8F00E7A4DF3F1B3DF6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Available For Sale Securities Debt Securities Fair Value [Abstract]</link:label>
    <link:label id="lab_pll_AvailableForSaleSecuritiesDebtSecuritiesFairValueAbstract_83E44986B2F80D8F00E7A4DF3F1B3DF6_documentation_en-US" xlink:label="lab_pll_AvailableForSaleSecuritiesDebtSecuritiesFairValueAbstract_83E44986B2F80D8F00E7A4DF3F1B3DF6" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Available For Sale Securities Debt Securities Fair Value.</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_AvailableForSaleSecuritiesDebtSecuritiesFairValueAbstract" xlink:label="loc_pll_AvailableForSaleSecuritiesDebtSecuritiesFairValueAbstract_83E44986B2F80D8F00E7A4DF3F1B3DF6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_AvailableForSaleSecuritiesDebtSecuritiesFairValueAbstract_83E44986B2F80D8F00E7A4DF3F1B3DF6" xlink:to="lab_pll_AvailableForSaleSecuritiesDebtSecuritiesFairValueAbstract_83E44986B2F80D8F00E7A4DF3F1B3DF6" xlink:type="arc" />
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesFairValueDisclosure_F450C4188DCDDB332B88A4DF3F1BD6EB_verboseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesFairValueDisclosure_F450C4188DCDDB332B88A4DF3F1BD6EB" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Securities</link:label>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesFairValueDisclosure_F450C4188DCDDB332B88A4DF3F1BD6EB_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesFairValueDisclosure_F450C4188DCDDB332B88A4DF3F1BD6EB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Available-for-sale Securities, Fair Value Disclosure</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesFairValueDisclosure" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesFairValueDisclosure_F450C4188DCDDB332B88A4DF3F1BD6EB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesFairValueDisclosure_F450C4188DCDDB332B88A4DF3F1BD6EB" xlink:to="lab_us-gaap_AvailableForSaleSecuritiesFairValueDisclosure_F450C4188DCDDB332B88A4DF3F1BD6EB" xlink:type="arc" />
    <link:label id="lab_pll_AvailableForSaleSecuritiesDebtSecuritiesGrossUnrealizedHoldingGainsAbstract_61CC7F57008050BD6F30A4DF3F1B97BF_verboseLabel_en-US" xlink:label="lab_pll_AvailableForSaleSecuritiesDebtSecuritiesGrossUnrealizedHoldingGainsAbstract_61CC7F57008050BD6F30A4DF3F1B97BF" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Gross Unrealized Holding Gains</link:label>
    <link:label id="lab_pll_AvailableForSaleSecuritiesDebtSecuritiesGrossUnrealizedHoldingGainsAbstract_61CC7F57008050BD6F30A4DF3F1B97BF_label_en-US" xlink:label="lab_pll_AvailableForSaleSecuritiesDebtSecuritiesGrossUnrealizedHoldingGainsAbstract_61CC7F57008050BD6F30A4DF3F1B97BF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Available For Sale Securities Debt Securities Gross Unrealized Holding Gains (Abstract)</link:label>
    <link:label id="lab_pll_AvailableForSaleSecuritiesDebtSecuritiesGrossUnrealizedHoldingGainsAbstract_61CC7F57008050BD6F30A4DF3F1B97BF_documentation_en-US" xlink:label="lab_pll_AvailableForSaleSecuritiesDebtSecuritiesGrossUnrealizedHoldingGainsAbstract_61CC7F57008050BD6F30A4DF3F1B97BF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Available For Sale Securities Debt Securities Gross Unrealized Holding Gains (Abstract).</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_AvailableForSaleSecuritiesDebtSecuritiesGrossUnrealizedHoldingGainsAbstract" xlink:label="loc_pll_AvailableForSaleSecuritiesDebtSecuritiesGrossUnrealizedHoldingGainsAbstract_61CC7F57008050BD6F30A4DF3F1B97BF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_AvailableForSaleSecuritiesDebtSecuritiesGrossUnrealizedHoldingGainsAbstract_61CC7F57008050BD6F30A4DF3F1B97BF" xlink:to="lab_pll_AvailableForSaleSecuritiesDebtSecuritiesGrossUnrealizedHoldingGainsAbstract_61CC7F57008050BD6F30A4DF3F1B97BF" xlink:type="arc" />
    <link:label id="lab_us-gaap_AvailableforsaleSecuritiesGrossUnrealizedGain_5A8B61E32B43EC2A52FFA4DF3F1B03E5_verboseLabel_en-US" xlink:label="lab_us-gaap_AvailableforsaleSecuritiesGrossUnrealizedGain_5A8B61E32B43EC2A52FFA4DF3F1B03E5" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Securities</link:label>
    <link:label id="lab_us-gaap_AvailableforsaleSecuritiesGrossUnrealizedGain_5A8B61E32B43EC2A52FFA4DF3F1B03E5_label_en-US" xlink:label="lab_us-gaap_AvailableforsaleSecuritiesGrossUnrealizedGain_5A8B61E32B43EC2A52FFA4DF3F1B03E5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Available-for-sale Securities, Gross Unrealized Gains</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableforsaleSecuritiesGrossUnrealizedGain" xlink:label="loc_us-gaap_AvailableforsaleSecuritiesGrossUnrealizedGain_5A8B61E32B43EC2A52FFA4DF3F1B03E5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableforsaleSecuritiesGrossUnrealizedGain_5A8B61E32B43EC2A52FFA4DF3F1B03E5" xlink:to="lab_us-gaap_AvailableforsaleSecuritiesGrossUnrealizedGain_5A8B61E32B43EC2A52FFA4DF3F1B03E5" xlink:type="arc" />
    <link:label id="lab_pll_AvailableForSaleSecuritiesDebtSecuritiesGrossUnrealizedHoldingLossesAbstract_6E63F469796AE2CC5DFDA4DF3F1BA26C_verboseLabel_en-US" xlink:label="lab_pll_AvailableForSaleSecuritiesDebtSecuritiesGrossUnrealizedHoldingLossesAbstract_6E63F469796AE2CC5DFDA4DF3F1BA26C" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Gross Unrealized Holding Losses</link:label>
    <link:label id="lab_pll_AvailableForSaleSecuritiesDebtSecuritiesGrossUnrealizedHoldingLossesAbstract_6E63F469796AE2CC5DFDA4DF3F1BA26C_label_en-US" xlink:label="lab_pll_AvailableForSaleSecuritiesDebtSecuritiesGrossUnrealizedHoldingLossesAbstract_6E63F469796AE2CC5DFDA4DF3F1BA26C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Available For Sale Securities Debt Securities Gross Unrealized Holding Losses [Abstract]</link:label>
    <link:label id="lab_pll_AvailableForSaleSecuritiesDebtSecuritiesGrossUnrealizedHoldingLossesAbstract_6E63F469796AE2CC5DFDA4DF3F1BA26C_documentation_en-US" xlink:label="lab_pll_AvailableForSaleSecuritiesDebtSecuritiesGrossUnrealizedHoldingLossesAbstract_6E63F469796AE2CC5DFDA4DF3F1BA26C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Available For Sale Securities Debt Securities Gross Unrealized Holding Losses.</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_AvailableForSaleSecuritiesDebtSecuritiesGrossUnrealizedHoldingLossesAbstract" xlink:label="loc_pll_AvailableForSaleSecuritiesDebtSecuritiesGrossUnrealizedHoldingLossesAbstract_6E63F469796AE2CC5DFDA4DF3F1BA26C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_AvailableForSaleSecuritiesDebtSecuritiesGrossUnrealizedHoldingLossesAbstract_6E63F469796AE2CC5DFDA4DF3F1BA26C" xlink:to="lab_pll_AvailableForSaleSecuritiesDebtSecuritiesGrossUnrealizedHoldingLossesAbstract_6E63F469796AE2CC5DFDA4DF3F1BA26C" xlink:type="arc" />
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLosses1_6B67C6D2EAE6A2EBD559A4DF3F1B7263_negatedLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLosses1_6B67C6D2EAE6A2EBD559A4DF3F1B7263" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Securities</link:label>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLosses1_6B67C6D2EAE6A2EBD559A4DF3F1B7263_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLosses1_6B67C6D2EAE6A2EBD559A4DF3F1B7263" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Available-for-sale Securities, Gross Unrealized Losses</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLosses1" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLosses1_6B67C6D2EAE6A2EBD559A4DF3F1B7263" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLosses1_6B67C6D2EAE6A2EBD559A4DF3F1B7263" xlink:to="lab_us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLosses1_6B67C6D2EAE6A2EBD559A4DF3F1B7263" xlink:type="arc" />
    <link:label id="lab_pll_AvailableForSaleSecuritiesDebtSecuritiesGrossUnrealizedHoldingGainsLossesAbstract_F701DB9C4DD58EC5B817A4DF3F1BAEE2_verboseLabel_en-US" xlink:label="lab_pll_AvailableForSaleSecuritiesDebtSecuritiesGrossUnrealizedHoldingGainsLossesAbstract_F701DB9C4DD58EC5B817A4DF3F1BAEE2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Net Unrealized Holding Gains</link:label>
    <link:label id="lab_pll_AvailableForSaleSecuritiesDebtSecuritiesGrossUnrealizedHoldingGainsLossesAbstract_F701DB9C4DD58EC5B817A4DF3F1BAEE2_label_en-US" xlink:label="lab_pll_AvailableForSaleSecuritiesDebtSecuritiesGrossUnrealizedHoldingGainsLossesAbstract_F701DB9C4DD58EC5B817A4DF3F1BAEE2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Available For Sale Securities Debt Securities Gross Unrealized Holding Gains Losses [Abstract]</link:label>
    <link:label id="lab_pll_AvailableForSaleSecuritiesDebtSecuritiesGrossUnrealizedHoldingGainsLossesAbstract_F701DB9C4DD58EC5B817A4DF3F1BAEE2_documentation_en-US" xlink:label="lab_pll_AvailableForSaleSecuritiesDebtSecuritiesGrossUnrealizedHoldingGainsLossesAbstract_F701DB9C4DD58EC5B817A4DF3F1BAEE2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Available For Sale Securities Debt Securities Gross Unrealized Holding Gains Losses</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_AvailableForSaleSecuritiesDebtSecuritiesGrossUnrealizedHoldingGainsLossesAbstract" xlink:label="loc_pll_AvailableForSaleSecuritiesDebtSecuritiesGrossUnrealizedHoldingGainsLossesAbstract_F701DB9C4DD58EC5B817A4DF3F1BAEE2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_AvailableForSaleSecuritiesDebtSecuritiesGrossUnrealizedHoldingGainsLossesAbstract_F701DB9C4DD58EC5B817A4DF3F1BAEE2" xlink:to="lab_pll_AvailableForSaleSecuritiesDebtSecuritiesGrossUnrealizedHoldingGainsLossesAbstract_F701DB9C4DD58EC5B817A4DF3F1BAEE2" xlink:type="arc" />
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGainLoss_4C0FA5071B22B339A412A4DF3F1BCF1A_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGainLoss_4C0FA5071B22B339A412A4DF3F1BCF1A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Securities</link:label>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGainLoss_4C0FA5071B22B339A412A4DF3F1BCF1A_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGainLoss_4C0FA5071B22B339A412A4DF3F1BCF1A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Available-for-sale Securities, Gross Unrealized Gain (Loss)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGainLoss" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGainLoss_4C0FA5071B22B339A412A4DF3F1BCF1A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGainLoss_4C0FA5071B22B339A412A4DF3F1BCF1A" xlink:to="lab_us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGainLoss_4C0FA5071B22B339A412A4DF3F1BCF1A" xlink:type="arc" />
    <link:label id="lab_us-gaap_RestructuringAndRelatedActivitiesAbstract_3BBEC6211CB37E88E720A4DF3A9FED9A_label_en-US" xlink:label="lab_us-gaap_RestructuringAndRelatedActivitiesAbstract_3BBEC6211CB37E88E720A4DF3A9FED9A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restructuring and Related Activities [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_RestructuringAndRelatedActivitiesAbstract" xlink:label="loc_us-gaap_RestructuringAndRelatedActivitiesAbstract_3BBEC6211CB37E88E720A4DF3A9FED9A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestructuringAndRelatedActivitiesAbstract_3BBEC6211CB37E88E720A4DF3A9FED9A" xlink:to="lab_us-gaap_RestructuringAndRelatedActivitiesAbstract_3BBEC6211CB37E88E720A4DF3A9FED9A" xlink:type="arc" />
    <link:label id="lab_pll_RestructuringAndOtherGainsChargesTable_BAC112CB107F5FD40149A4DF3A9F355B_verboseLabel_en-US" xlink:label="lab_pll_RestructuringAndOtherGainsChargesTable_BAC112CB107F5FD40149A4DF3A9F355B" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Restructuring and other gains charges [Table]</link:label>
    <link:label id="lab_pll_RestructuringAndOtherGainsChargesTable_BAC112CB107F5FD40149A4DF3A9F355B_label_en-US" xlink:label="lab_pll_RestructuringAndOtherGainsChargesTable_BAC112CB107F5FD40149A4DF3A9F355B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restructuring and other gains charges [Table]</link:label>
    <link:label id="lab_pll_RestructuringAndOtherGainsChargesTable_BAC112CB107F5FD40149A4DF3A9F355B_documentation_en-US" xlink:label="lab_pll_RestructuringAndOtherGainsChargesTable_BAC112CB107F5FD40149A4DF3A9F355B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Restructuring and other gains charges [Table]</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_RestructuringAndOtherGainsChargesTable" xlink:label="loc_pll_RestructuringAndOtherGainsChargesTable_BAC112CB107F5FD40149A4DF3A9F355B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_RestructuringAndOtherGainsChargesTable_BAC112CB107F5FD40149A4DF3A9F355B" xlink:to="lab_pll_RestructuringAndOtherGainsChargesTable_BAC112CB107F5FD40149A4DF3A9F355B" xlink:type="arc" />
    <link:label id="lab_pll_RestructuringOtherChargesAxis_2EC735BEFF84B52B47ABA4DF3A9F771F_verboseLabel_en-US" xlink:label="lab_pll_RestructuringOtherChargesAxis_2EC735BEFF84B52B47ABA4DF3A9F771F" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Restructuring Other Charges [Axis]</link:label>
    <link:label id="lab_pll_RestructuringOtherChargesAxis_2EC735BEFF84B52B47ABA4DF3A9F771F_label_en-US" xlink:label="lab_pll_RestructuringOtherChargesAxis_2EC735BEFF84B52B47ABA4DF3A9F771F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restructuring Other Charges [Axis]</link:label>
    <link:label id="lab_pll_RestructuringOtherChargesAxis_2EC735BEFF84B52B47ABA4DF3A9F771F_documentation_en-US" xlink:label="lab_pll_RestructuringOtherChargesAxis_2EC735BEFF84B52B47ABA4DF3A9F771F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Restructuring Other Charges [Axis]</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_RestructuringOtherChargesAxis" xlink:label="loc_pll_RestructuringOtherChargesAxis_2EC735BEFF84B52B47ABA4DF3A9F771F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_RestructuringOtherChargesAxis_2EC735BEFF84B52B47ABA4DF3A9F771F" xlink:to="lab_pll_RestructuringOtherChargesAxis_2EC735BEFF84B52B47ABA4DF3A9F771F" xlink:type="arc" />
    <link:label id="lab_pll_RestructuringOtherChargesDomain_D939BC3F649B034766B7A4DF3A9F9F15_verboseLabel_en-US" xlink:label="lab_pll_RestructuringOtherChargesDomain_D939BC3F649B034766B7A4DF3A9F9F15" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Restructuring Other Charges [Domain]</link:label>
    <link:label id="lab_pll_RestructuringOtherChargesDomain_D939BC3F649B034766B7A4DF3A9F9F15_label_en-US" xlink:label="lab_pll_RestructuringOtherChargesDomain_D939BC3F649B034766B7A4DF3A9F9F15" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restructuring Other Charges [Domain]</link:label>
    <link:label id="lab_pll_RestructuringOtherChargesDomain_D939BC3F649B034766B7A4DF3A9F9F15_documentation_en-US" xlink:label="lab_pll_RestructuringOtherChargesDomain_D939BC3F649B034766B7A4DF3A9F9F15" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Restructuring Other Charges [Domain]</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_RestructuringOtherChargesDomain" xlink:label="loc_pll_RestructuringOtherChargesDomain_D939BC3F649B034766B7A4DF3A9F9F15" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_RestructuringOtherChargesDomain_D939BC3F649B034766B7A4DF3A9F9F15" xlink:to="lab_pll_RestructuringOtherChargesDomain_D939BC3F649B034766B7A4DF3A9F9F15" xlink:type="arc" />
    <link:label id="lab_pll_OtherChargesGainsMember_063F64DDB48507352B3BA4DF3A9FD3AF_verboseLabel_en-US" xlink:label="lab_pll_OtherChargesGainsMember_063F64DDB48507352B3BA4DF3A9FD3AF" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Other (Gains)/Charges [Member]</link:label>
    <link:label id="lab_pll_OtherChargesGainsMember_063F64DDB48507352B3BA4DF3A9FD3AF_label_en-US" xlink:label="lab_pll_OtherChargesGainsMember_063F64DDB48507352B3BA4DF3A9FD3AF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Charges Gains [Member]</link:label>
    <link:label id="lab_pll_OtherChargesGainsMember_063F64DDB48507352B3BA4DF3A9FD3AF_documentation_en-US" xlink:label="lab_pll_OtherChargesGainsMember_063F64DDB48507352B3BA4DF3A9FD3AF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Charges Gains [Member]</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_OtherChargesGainsMember" xlink:label="loc_pll_OtherChargesGainsMember_063F64DDB48507352B3BA4DF3A9FD3AF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_OtherChargesGainsMember_063F64DDB48507352B3BA4DF3A9FD3AF" xlink:to="lab_pll_OtherChargesGainsMember_063F64DDB48507352B3BA4DF3A9FD3AF" xlink:type="arc" />
    <link:label id="lab_us-gaap_RestructuringChargesMember_3DF87E0DEFAD96B41CEEA4DF3A9F50C7_terseLabel_en-US" xlink:label="lab_us-gaap_RestructuringChargesMember_3DF87E0DEFAD96B41CEEA4DF3A9F50C7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restructuring Charges [Member]</link:label>
    <link:label id="lab_us-gaap_RestructuringChargesMember_3DF87E0DEFAD96B41CEEA4DF3A9F50C7_label_en-US" xlink:label="lab_us-gaap_RestructuringChargesMember_3DF87E0DEFAD96B41CEEA4DF3A9F50C7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restructuring Charges [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_RestructuringChargesMember" xlink:label="loc_us-gaap_RestructuringChargesMember_3DF87E0DEFAD96B41CEEA4DF3A9F50C7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestructuringChargesMember_3DF87E0DEFAD96B41CEEA4DF3A9F50C7" xlink:to="lab_us-gaap_RestructuringChargesMember_3DF87E0DEFAD96B41CEEA4DF3A9F50C7" xlink:type="arc" />
    <link:label id="lab_pll_RestructuringAndOtherGainsChargesLineItems_7290F6E1457638E5040EA4DF3A9F82D0_verboseLabel_en-US" xlink:label="lab_pll_RestructuringAndOtherGainsChargesLineItems_7290F6E1457638E5040EA4DF3A9F82D0" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Restructuring and other gains charges [Line Items]</link:label>
    <link:label id="lab_pll_RestructuringAndOtherGainsChargesLineItems_7290F6E1457638E5040EA4DF3A9F82D0_label_en-US" xlink:label="lab_pll_RestructuringAndOtherGainsChargesLineItems_7290F6E1457638E5040EA4DF3A9F82D0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restructuring and other gains charges [Line Items]</link:label>
    <link:label id="lab_pll_RestructuringAndOtherGainsChargesLineItems_7290F6E1457638E5040EA4DF3A9F82D0_documentation_en-US" xlink:label="lab_pll_RestructuringAndOtherGainsChargesLineItems_7290F6E1457638E5040EA4DF3A9F82D0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Restructuring and other gains charges [Line Items]</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_RestructuringAndOtherGainsChargesLineItems" xlink:label="loc_pll_RestructuringAndOtherGainsChargesLineItems_7290F6E1457638E5040EA4DF3A9F82D0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_RestructuringAndOtherGainsChargesLineItems_7290F6E1457638E5040EA4DF3A9F82D0" xlink:to="lab_pll_RestructuringAndOtherGainsChargesLineItems_7290F6E1457638E5040EA4DF3A9F82D0" xlink:type="arc" />
    <link:label id="lab_us-gaap_SeveranceCosts_3D87906082093F05ABFAA4DF3A9FE177_verboseLabel_en-US" xlink:label="lab_us-gaap_SeveranceCosts_3D87906082093F05ABFAA4DF3A9FE177" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Severance benefits and other employment contract obligations</link:label>
    <link:label id="lab_us-gaap_SeveranceCosts_3D87906082093F05ABFAA4DF3A9FE177_label_en-US" xlink:label="lab_us-gaap_SeveranceCosts_3D87906082093F05ABFAA4DF3A9FE177" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Severance Costs</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SeveranceCosts" xlink:label="loc_us-gaap_SeveranceCosts_3D87906082093F05ABFAA4DF3A9FE177" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SeveranceCosts_3D87906082093F05ABFAA4DF3A9FE177" xlink:to="lab_us-gaap_SeveranceCosts_3D87906082093F05ABFAA4DF3A9FE177" xlink:type="arc" />
    <link:label id="lab_pll_AssetImpairmentChargesAndGainLossOnSaleOfAssets_841A7F9D55B342643860A4DF3A9FA998_terseLabel_en-US" xlink:label="lab_pll_AssetImpairmentChargesAndGainLossOnSaleOfAssets_841A7F9D55B342643860A4DF3A9FA998" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gain on sale of assets</link:label>
    <link:label id="lab_pll_AssetImpairmentChargesAndGainLossOnSaleOfAssets_841A7F9D55B342643860A4DF3A9FA998_label_en-US" xlink:label="lab_pll_AssetImpairmentChargesAndGainLossOnSaleOfAssets_841A7F9D55B342643860A4DF3A9FA998" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Asset Impairment Charges and Gain Loss On Sale Of Assets</link:label>
    <link:label id="lab_pll_AssetImpairmentChargesAndGainLossOnSaleOfAssets_841A7F9D55B342643860A4DF3A9FA998_documentation_en-US" xlink:label="lab_pll_AssetImpairmentChargesAndGainLossOnSaleOfAssets_841A7F9D55B342643860A4DF3A9FA998" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other-than-temporary diminution in value of certain equity and debt investment securities held by benefits protection trust and a charge for the impairment of capitalized software development costs related to discontinued projects.</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_AssetImpairmentChargesAndGainLossOnSaleOfAssets" xlink:label="loc_pll_AssetImpairmentChargesAndGainLossOnSaleOfAssets_841A7F9D55B342643860A4DF3A9FA998" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_AssetImpairmentChargesAndGainLossOnSaleOfAssets_841A7F9D55B342643860A4DF3A9FA998" xlink:to="lab_pll_AssetImpairmentChargesAndGainLossOnSaleOfAssets_841A7F9D55B342643860A4DF3A9FA998" xlink:type="arc" />
    <link:label id="lab_pll_ProfessionalServicesAndCostsNetOfInsurance_7475FF6638F90DA72837A4DF3A9FF711_verboseLabel_en-US" xlink:label="lab_pll_ProfessionalServicesAndCostsNetOfInsurance_7475FF6638F90DA72837A4DF3A9FF711" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Professional fees and other costs, net of receipt of insurance claim payments</link:label>
    <link:label id="lab_pll_ProfessionalServicesAndCostsNetOfInsurance_7475FF6638F90DA72837A4DF3A9FF711_label_en-US" xlink:label="lab_pll_ProfessionalServicesAndCostsNetOfInsurance_7475FF6638F90DA72837A4DF3A9FF711" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Professional Services and Costs Net Of Insurance</link:label>
    <link:label id="lab_pll_ProfessionalServicesAndCostsNetOfInsurance_7475FF6638F90DA72837A4DF3A9FF711_documentation_en-US" xlink:label="lab_pll_ProfessionalServicesAndCostsNetOfInsurance_7475FF6638F90DA72837A4DF3A9FF711" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The charge against earnings in the period, comprised of costs associated with restructuring activities and other charges (gains) relates to environmental matters, legal related items, impairment and gain on sale of assets and In-process research and development and includes other charges or gain presented net of receipt of insurance claims payments.</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_ProfessionalServicesAndCostsNetOfInsurance" xlink:label="loc_pll_ProfessionalServicesAndCostsNetOfInsurance_7475FF6638F90DA72837A4DF3A9FF711" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_ProfessionalServicesAndCostsNetOfInsurance_7475FF6638F90DA72837A4DF3A9FF711" xlink:to="lab_pll_ProfessionalServicesAndCostsNetOfInsurance_7475FF6638F90DA72837A4DF3A9FF711" xlink:type="arc" />
    <link:label id="lab_pll_EnvironmentalRemediationExpenseNetOfInsurance_E3E7769F8ABBAC9D146B78C5274D3D6E_terseLabel_en-US" xlink:label="lab_pll_EnvironmentalRemediationExpenseNetOfInsurance_E3E7769F8ABBAC9D146B78C5274D3D6E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Environmental matters</link:label>
    <link:label id="lab_pll_EnvironmentalRemediationExpenseNetOfInsurance_E3E7769F8ABBAC9D146B78C5274D3D6E_label_en-US" xlink:label="lab_pll_EnvironmentalRemediationExpenseNetOfInsurance_E3E7769F8ABBAC9D146B78C5274D3D6E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Environmental Remediation Expense Net Of Insurance</link:label>
    <link:label id="lab_pll_EnvironmentalRemediationExpenseNetOfInsurance_E3E7769F8ABBAC9D146B78C5274D3D6E_documentation_en-US" xlink:label="lab_pll_EnvironmentalRemediationExpenseNetOfInsurance_E3E7769F8ABBAC9D146B78C5274D3D6E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The charge against earnings in the period for known or estimated future costs arising from requirements to perform environmental remediation activities presented net of receipt of insurance claim payments, if applicable.</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_EnvironmentalRemediationExpenseNetOfInsurance" xlink:label="loc_pll_EnvironmentalRemediationExpenseNetOfInsurance_E3E7769F8ABBAC9D146B78C5274D3D6E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_EnvironmentalRemediationExpenseNetOfInsurance_E3E7769F8ABBAC9D146B78C5274D3D6E" xlink:to="lab_pll_EnvironmentalRemediationExpenseNetOfInsurance_E3E7769F8ABBAC9D146B78C5274D3D6E" xlink:type="arc" />
    <link:label id="lab_us-gaap_RestructuringReserveAccrualAdjustment_F32989C5E1714FC3487BA4DF3A9F3630_negatedLabel_en-US" xlink:label="lab_us-gaap_RestructuringReserveAccrualAdjustment_F32989C5E1714FC3487BA4DF3A9F3630" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Reversal of excess restructuring reserves</link:label>
    <link:label id="lab_us-gaap_RestructuringReserveAccrualAdjustment_F32989C5E1714FC3487BA4DF3A9F3630_label_en-US" xlink:label="lab_us-gaap_RestructuringReserveAccrualAdjustment_F32989C5E1714FC3487BA4DF3A9F3630" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restructuring Reserve, Accrual Adjustment</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_RestructuringReserveAccrualAdjustment" xlink:label="loc_us-gaap_RestructuringReserveAccrualAdjustment_F32989C5E1714FC3487BA4DF3A9F3630" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestructuringReserveAccrualAdjustment_F32989C5E1714FC3487BA4DF3A9F3630" xlink:to="lab_us-gaap_RestructuringReserveAccrualAdjustment_F32989C5E1714FC3487BA4DF3A9F3630" xlink:type="arc" />
    <link:label id="lab_pll_RestructuringAndOtherGainsChargesSettledWithCash_BDB56EE66E609DF28C47A4DF3A9FB0E8_verboseLabel_en-US" xlink:label="lab_pll_RestructuringAndOtherGainsChargesSettledWithCash_BDB56EE66E609DF28C47A4DF3A9FB0E8" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Cash</link:label>
    <link:label id="lab_pll_RestructuringAndOtherGainsChargesSettledWithCash_BDB56EE66E609DF28C47A4DF3A9FB0E8_label_en-US" xlink:label="lab_pll_RestructuringAndOtherGainsChargesSettledWithCash_BDB56EE66E609DF28C47A4DF3A9FB0E8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restructuring and Other (Gains) Charges Settled with Cash</link:label>
    <link:label id="lab_pll_RestructuringAndOtherGainsChargesSettledWithCash_BDB56EE66E609DF28C47A4DF3A9FB0E8_documentation_en-US" xlink:label="lab_pll_RestructuringAndOtherGainsChargesSettledWithCash_BDB56EE66E609DF28C47A4DF3A9FB0E8" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of restructuring and other (gains) charges that will ultimately be settled in cash.</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_RestructuringAndOtherGainsChargesSettledWithCash" xlink:label="loc_pll_RestructuringAndOtherGainsChargesSettledWithCash_BDB56EE66E609DF28C47A4DF3A9FB0E8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_RestructuringAndOtherGainsChargesSettledWithCash_BDB56EE66E609DF28C47A4DF3A9FB0E8" xlink:to="lab_pll_RestructuringAndOtherGainsChargesSettledWithCash_BDB56EE66E609DF28C47A4DF3A9FB0E8" xlink:type="arc" />
    <link:label id="lab_pll_RestructuringAndOtherGainsChargesSettledWithoutCash_FE827D37947F127F67B0A4DF3A9FF12B_verboseLabel_en-US" xlink:label="lab_pll_RestructuringAndOtherGainsChargesSettledWithoutCash_FE827D37947F127F67B0A4DF3A9FF12B" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Non-cash</link:label>
    <link:label id="lab_pll_RestructuringAndOtherGainsChargesSettledWithoutCash_FE827D37947F127F67B0A4DF3A9FF12B_label_en-US" xlink:label="lab_pll_RestructuringAndOtherGainsChargesSettledWithoutCash_FE827D37947F127F67B0A4DF3A9FF12B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restructuring and Other (Gains) Charges Settled Without Cash</link:label>
    <link:label id="lab_pll_RestructuringAndOtherGainsChargesSettledWithoutCash_FE827D37947F127F67B0A4DF3A9FF12B_documentation_en-US" xlink:label="lab_pll_RestructuringAndOtherGainsChargesSettledWithoutCash_FE827D37947F127F67B0A4DF3A9FF12B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of restructuring and other (gains) charges that will not ultimately be settled in cash.</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_RestructuringAndOtherGainsChargesSettledWithoutCash" xlink:label="loc_pll_RestructuringAndOtherGainsChargesSettledWithoutCash_FE827D37947F127F67B0A4DF3A9FF12B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_RestructuringAndOtherGainsChargesSettledWithoutCash_FE827D37947F127F67B0A4DF3A9FF12B" xlink:to="lab_pll_RestructuringAndOtherGainsChargesSettledWithoutCash_FE827D37947F127F67B0A4DF3A9FF12B" xlink:type="arc" />
    <link:label id="lab_pll_RestructuringAndOtherGainsCharges_E7651ABDBFDBDAAFE036A4DF3A9FDC00_verboseLabel_en-US" xlink:label="lab_pll_RestructuringAndOtherGainsCharges_E7651ABDBFDBDAAFE036A4DF3A9FDC00" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Restructuring And Other Gains Charges</link:label>
    <link:label id="lab_pll_RestructuringAndOtherGainsCharges_E7651ABDBFDBDAAFE036A4DF3A9FDC00_label_en-US" xlink:label="lab_pll_RestructuringAndOtherGainsCharges_E7651ABDBFDBDAAFE036A4DF3A9FDC00" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restructuring And Other Gains Charges</link:label>
    <link:label id="lab_pll_RestructuringAndOtherGainsCharges_E7651ABDBFDBDAAFE036A4DF3A9FDC00_documentation_en-US" xlink:label="lab_pll_RestructuringAndOtherGainsCharges_E7651ABDBFDBDAAFE036A4DF3A9FDC00" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Restructuring And Other Gains Charges</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_RestructuringAndOtherGainsCharges" xlink:label="loc_pll_RestructuringAndOtherGainsCharges_E7651ABDBFDBDAAFE036A4DF3A9FDC00" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_RestructuringAndOtherGainsCharges_E7651ABDBFDBDAAFE036A4DF3A9FDC00" xlink:to="lab_pll_RestructuringAndOtherGainsCharges_E7651ABDBFDBDAAFE036A4DF3A9FDC00" xlink:type="arc" />
    <link:label id="lab_us-gaap_SegmentReportingAbstract_17D295A79A8949ADA7A3A4DF41F69E2E_label_en-US" xlink:label="lab_us-gaap_SegmentReportingAbstract_17D295A79A8949ADA7A3A4DF41F69E2E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segment Reporting [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SegmentReportingAbstract" xlink:label="loc_us-gaap_SegmentReportingAbstract_17D295A79A8949ADA7A3A4DF41F69E2E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SegmentReportingAbstract_17D295A79A8949ADA7A3A4DF41F69E2E" xlink:to="lab_us-gaap_SegmentReportingAbstract_17D295A79A8949ADA7A3A4DF41F69E2E" xlink:type="arc" />
    <link:label id="lab_us-gaap_SegmentReportingDisclosureTextBlock_52DA231513FB67052072A4DF41F65490_verboseLabel_en-US" xlink:label="lab_us-gaap_SegmentReportingDisclosureTextBlock_52DA231513FB67052072A4DF41F65490" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">SEGMENT INFORMATION</link:label>
    <link:label id="lab_us-gaap_SegmentReportingDisclosureTextBlock_52DA231513FB67052072A4DF41F65490_label_en-US" xlink:label="lab_us-gaap_SegmentReportingDisclosureTextBlock_52DA231513FB67052072A4DF41F65490" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segment Reporting Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SegmentReportingDisclosureTextBlock" xlink:label="loc_us-gaap_SegmentReportingDisclosureTextBlock_52DA231513FB67052072A4DF41F65490" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SegmentReportingDisclosureTextBlock_52DA231513FB67052072A4DF41F65490" xlink:to="lab_us-gaap_SegmentReportingDisclosureTextBlock_52DA231513FB67052072A4DF41F65490" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfRestructuringAndRelatedCostsTextBlock_5BF3346DB09B9E8AD7D4A4DF3A6AB9A7_verboseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfRestructuringAndRelatedCostsTextBlock_5BF3346DB09B9E8AD7D4A4DF3A6AB9A7" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Summary of Restructuring and Other Charges</link:label>
    <link:label id="lab_us-gaap_ScheduleOfRestructuringAndRelatedCostsTextBlock_5BF3346DB09B9E8AD7D4A4DF3A6AB9A7_label_en-US" xlink:label="lab_us-gaap_ScheduleOfRestructuringAndRelatedCostsTextBlock_5BF3346DB09B9E8AD7D4A4DF3A6AB9A7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Restructuring and Related Costs [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTextBlock" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTextBlock_5BF3346DB09B9E8AD7D4A4DF3A6AB9A7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTextBlock_5BF3346DB09B9E8AD7D4A4DF3A6AB9A7" xlink:to="lab_us-gaap_ScheduleOfRestructuringAndRelatedCostsTextBlock_5BF3346DB09B9E8AD7D4A4DF3A6AB9A7" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfRestructuringReserveByTypeOfCostTextBlock_5464344E30D99B4252F3A4DF3A6A5A4F_verboseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfRestructuringReserveByTypeOfCostTextBlock_5464344E30D99B4252F3A4DF3A6A5A4F" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Summarized Activity Relating to Restructuring</link:label>
    <link:label id="lab_us-gaap_ScheduleOfRestructuringReserveByTypeOfCostTextBlock_5464344E30D99B4252F3A4DF3A6A5A4F_label_en-US" xlink:label="lab_us-gaap_ScheduleOfRestructuringReserveByTypeOfCostTextBlock_5464344E30D99B4252F3A4DF3A6A5A4F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Restructuring Reserve by Type of Cost [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfRestructuringReserveByTypeOfCostTextBlock" xlink:label="loc_us-gaap_ScheduleOfRestructuringReserveByTypeOfCostTextBlock_5464344E30D99B4252F3A4DF3A6A5A4F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfRestructuringReserveByTypeOfCostTextBlock_5464344E30D99B4252F3A4DF3A6A5A4F" xlink:to="lab_us-gaap_ScheduleOfRestructuringReserveByTypeOfCostTextBlock_5464344E30D99B4252F3A4DF3A6A5A4F" xlink:type="arc" />
    <link:label id="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_6A58DDB4ECF428422B11A4DF370E22B0_label_en-US" xlink:label="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_6A58DDB4ECF428422B11A4DF370E22B0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Organization, Consolidation and Presentation of Financial Statements [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:label="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_6A58DDB4ECF428422B11A4DF370E22B0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_6A58DDB4ECF428422B11A4DF370E22B0" xlink:to="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_6A58DDB4ECF428422B11A4DF370E22B0" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock_9C6F38066FE5FCFB159DA4DF370EEF8A_verboseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock_9C6F38066FE5FCFB159DA4DF370EEF8A" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Summary of Accounts Receivable</link:label>
    <link:label id="lab_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock_9C6F38066FE5FCFB159DA4DF370EEF8A_label_en-US" xlink:label="lab_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock_9C6F38066FE5FCFB159DA4DF370EEF8A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock_9C6F38066FE5FCFB159DA4DF370EEF8A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock_9C6F38066FE5FCFB159DA4DF370EEF8A" xlink:to="lab_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock_9C6F38066FE5FCFB159DA4DF370EEF8A" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_7F0A7B54EF694C75AF9EA4DF370FEB6A_verboseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_7F0A7B54EF694C75AF9EA4DF370FEB6A" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Major Classes of Inventory</link:label>
    <link:label id="lab_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_7F0A7B54EF694C75AF9EA4DF370FEB6A_label_en-US" xlink:label="lab_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_7F0A7B54EF694C75AF9EA4DF370FEB6A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Inventory, Current [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfInventoryCurrentTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_7F0A7B54EF694C75AF9EA4DF370FEB6A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_7F0A7B54EF694C75AF9EA4DF370FEB6A" xlink:to="lab_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_7F0A7B54EF694C75AF9EA4DF370FEB6A" xlink:type="arc" />
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentTextBlock_22CF49B092F6821A0433A4DF370FE8B2_verboseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentTextBlock_22CF49B092F6821A0433A4DF370FE8B2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Property, Plant And Equipment</link:label>
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentTextBlock_22CF49B092F6821A0433A4DF370FE8B2_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentTextBlock_22CF49B092F6821A0433A4DF370FE8B2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTextBlock" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTextBlock_22CF49B092F6821A0433A4DF370FE8B2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTextBlock_22CF49B092F6821A0433A4DF370FE8B2" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentTextBlock_22CF49B092F6821A0433A4DF370FE8B2" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetIncomeLoss_4DC930F35BAD62F6465EA4DF41728C6A_verboseLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLoss_4DC930F35BAD62F6465EA4DF41728C6A" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Net earnings</link:label>
    <link:label id="lab_us-gaap_NetIncomeLoss_4DC930F35BAD62F6465EA4DF41728C6A_label_en-US" xlink:label="lab_us-gaap_NetIncomeLoss_4DC930F35BAD62F6465EA4DF41728C6A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Income (Loss) Attributable to Parent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_4DC930F35BAD62F6465EA4DF41728C6A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetIncomeLoss_4DC930F35BAD62F6465EA4DF41728C6A" xlink:to="lab_us-gaap_NetIncomeLoss_4DC930F35BAD62F6465EA4DF41728C6A" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent_7D8874009487713B1BCAA4DF41728E12_verboseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent_7D8874009487713B1BCAA4DF41728E12" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Unrealized translation adjustment</link:label>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent_7D8874009487713B1BCAA4DF41728E12_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent_7D8874009487713B1BCAA4DF41728E12" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax, Portion Attributable to Parent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent" xlink:label="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent_7D8874009487713B1BCAA4DF41728E12" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent_7D8874009487713B1BCAA4DF41728E12" xlink:to="lab_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent_7D8874009487713B1BCAA4DF41728E12" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTaxPortionAttributableToParent_02AD9EFDED9F8B2683CAA4DF41728EC8_negatedLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTaxPortionAttributableToParent_02AD9EFDED9F8B2683CAA4DF41728EC8" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Income taxes</link:label>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTaxPortionAttributableToParent_02AD9EFDED9F8B2683CAA4DF41728EC8_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTaxPortionAttributableToParent_02AD9EFDED9F8B2683CAA4DF41728EC8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax, Portion Attributable to Parent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTaxPortionAttributableToParent" xlink:label="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTaxPortionAttributableToParent_02AD9EFDED9F8B2683CAA4DF41728EC8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTaxPortionAttributableToParent_02AD9EFDED9F8B2683CAA4DF41728EC8" xlink:to="lab_us-gaap_OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTaxPortionAttributableToParent_02AD9EFDED9F8B2683CAA4DF41728EC8" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_DEF35D66922302FB80ABA4DF4172CC44_totalLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_DEF35D66922302FB80ABA4DF4172CC44" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Unrealized translation adjustment, net</link:label>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_DEF35D66922302FB80ABA4DF4172CC44_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_DEF35D66922302FB80ABA4DF4172CC44" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent" xlink:label="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_DEF35D66922302FB80ABA4DF4172CC44" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_DEF35D66922302FB80ABA4DF4172CC44" xlink:to="lab_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_DEF35D66922302FB80ABA4DF4172CC44" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent_BFB42879747298387739A4DF417246FB_negatedLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent_BFB42879747298387739A4DF417246FB" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Pension liability adjustment</link:label>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent_BFB42879747298387739A4DF417246FB_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent_BFB42879747298387739A4DF417246FB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, before Tax, Portion Attributable to Parent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent_BFB42879747298387739A4DF417246FB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent_BFB42879747298387739A4DF417246FB" xlink:to="lab_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent_BFB42879747298387739A4DF417246FB" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent_9BCB9C7E80D27551E781A4DF4172BED0_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent_9BCB9C7E80D27551E781A4DF4172BED0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income taxes</link:label>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent_9BCB9C7E80D27551E781A4DF4172BED0_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent_9BCB9C7E80D27551E781A4DF4172BED0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Tax, Portion Attributable to Parent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent_9BCB9C7E80D27551E781A4DF4172BED0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent_9BCB9C7E80D27551E781A4DF4172BED0" xlink:to="lab_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent_9BCB9C7E80D27551E781A4DF4172BED0" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent_C3D5B08FCCAA3DD41E39A4DF417284AC_negatedTotalLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent_C3D5B08FCCAA3DD41E39A4DF417284AC" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="resource" xml:lang="en-US">Pension liability adjustment, net</link:label>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent_C3D5B08FCCAA3DD41E39A4DF417284AC_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent_C3D5B08FCCAA3DD41E39A4DF417284AC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax, Portion Attributable to Parent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent_C3D5B08FCCAA3DD41E39A4DF417284AC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent_C3D5B08FCCAA3DD41E39A4DF417284AC" xlink:to="lab_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent_C3D5B08FCCAA3DD41E39A4DF417284AC" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent_D046162B0AC1287A5D70A4DF417200F1_verboseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent_D046162B0AC1287A5D70A4DF417200F1" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Change in unrealized investment (losses)/gains</link:label>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent_D046162B0AC1287A5D70A4DF417200F1_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent_D046162B0AC1287A5D70A4DF417200F1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Tax, Portion Attributable to Parent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent" xlink:label="loc_us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent_D046162B0AC1287A5D70A4DF417200F1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent_D046162B0AC1287A5D70A4DF417200F1" xlink:to="lab_us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent_D046162B0AC1287A5D70A4DF417200F1" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent_FA245CF47EA567F614A4A4DF41728D3E_negatedLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent_FA245CF47EA567F614A4A4DF41728D3E" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Income taxes</link:label>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent_FA245CF47EA567F614A4A4DF41728D3E_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent_FA245CF47EA567F614A4A4DF41728D3E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income (Loss), Available-for-sale Securities, Tax, Portion Attributable to Parent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent" xlink:label="loc_us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent_FA245CF47EA567F614A4A4DF41728D3E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent_FA245CF47EA567F614A4A4DF41728D3E" xlink:to="lab_us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent_FA245CF47EA567F614A4A4DF41728D3E" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent_9850707582093AAE6138A4DF417287E5_totalLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent_9850707582093AAE6138A4DF417287E5" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Change in unrealized investment (losses)/gains, net</link:label>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent_9850707582093AAE6138A4DF417287E5_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent_9850707582093AAE6138A4DF417287E5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent" xlink:label="loc_us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent_9850707582093AAE6138A4DF417287E5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent_9850707582093AAE6138A4DF417287E5" xlink:to="lab_us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent_9850707582093AAE6138A4DF417287E5" xlink:type="arc" />
    <link:label id="lab_us-gaap_ComprehensiveIncomeNetOfTax_33F98B8B254E9CE58FD4A4DF41729923_totalLabel_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomeNetOfTax_33F98B8B254E9CE58FD4A4DF41729923" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total comprehensive income</link:label>
    <link:label id="lab_us-gaap_ComprehensiveIncomeNetOfTax_33F98B8B254E9CE58FD4A4DF41729923_label_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomeNetOfTax_33F98B8B254E9CE58FD4A4DF41729923" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Comprehensive Income (Loss), Net of Tax, Attributable to Parent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_33F98B8B254E9CE58FD4A4DF41729923" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_33F98B8B254E9CE58FD4A4DF41729923" xlink:to="lab_us-gaap_ComprehensiveIncomeNetOfTax_33F98B8B254E9CE58FD4A4DF41729923" xlink:type="arc" />
    <link:label id="lab_pll_DerivativeFinancialInstrumentsNotDesignatedAsHedgingInstrumentsTable_59DD2FD53ABDC1BE02DEA4DF40481A2E_verboseLabel_en-US" xlink:label="lab_pll_DerivativeFinancialInstrumentsNotDesignatedAsHedgingInstrumentsTable_59DD2FD53ABDC1BE02DEA4DF40481A2E" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Derivative financial instruments not designated as hedging instruments [Table]</link:label>
    <link:label id="lab_pll_DerivativeFinancialInstrumentsNotDesignatedAsHedgingInstrumentsTable_59DD2FD53ABDC1BE02DEA4DF40481A2E_label_en-US" xlink:label="lab_pll_DerivativeFinancialInstrumentsNotDesignatedAsHedgingInstrumentsTable_59DD2FD53ABDC1BE02DEA4DF40481A2E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative financial instruments not designated as hedging instruments [Table]</link:label>
    <link:label id="lab_pll_DerivativeFinancialInstrumentsNotDesignatedAsHedgingInstrumentsTable_59DD2FD53ABDC1BE02DEA4DF40481A2E_documentation_en-US" xlink:label="lab_pll_DerivativeFinancialInstrumentsNotDesignatedAsHedgingInstrumentsTable_59DD2FD53ABDC1BE02DEA4DF40481A2E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Derivative financial instruments not designated as hedging instruments [Table]</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_DerivativeFinancialInstrumentsNotDesignatedAsHedgingInstrumentsTable" xlink:label="loc_pll_DerivativeFinancialInstrumentsNotDesignatedAsHedgingInstrumentsTable_59DD2FD53ABDC1BE02DEA4DF40481A2E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_DerivativeFinancialInstrumentsNotDesignatedAsHedgingInstrumentsTable_59DD2FD53ABDC1BE02DEA4DF40481A2E" xlink:to="lab_pll_DerivativeFinancialInstrumentsNotDesignatedAsHedgingInstrumentsTable_59DD2FD53ABDC1BE02DEA4DF40481A2E" xlink:type="arc" />
    <link:label id="lab_pll_FinancialInstrumentsAndRisksUncertaintiesAxis_BB55C4BB6EC91E794922A4DF4048BEAA_verboseLabel_en-US" xlink:label="lab_pll_FinancialInstrumentsAndRisksUncertaintiesAxis_BB55C4BB6EC91E794922A4DF4048BEAA" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Financial Instruments and Risks Uncertainties [Axis]</link:label>
    <link:label id="lab_pll_FinancialInstrumentsAndRisksUncertaintiesAxis_BB55C4BB6EC91E794922A4DF4048BEAA_label_en-US" xlink:label="lab_pll_FinancialInstrumentsAndRisksUncertaintiesAxis_BB55C4BB6EC91E794922A4DF4048BEAA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Instruments and Risks Uncertainties [Axis]</link:label>
    <link:label id="lab_pll_FinancialInstrumentsAndRisksUncertaintiesAxis_BB55C4BB6EC91E794922A4DF4048BEAA_documentation_en-US" xlink:label="lab_pll_FinancialInstrumentsAndRisksUncertaintiesAxis_BB55C4BB6EC91E794922A4DF4048BEAA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financial Instruments and Risks Uncertainties [Axis]</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_FinancialInstrumentsAndRisksUncertaintiesAxis" xlink:label="loc_pll_FinancialInstrumentsAndRisksUncertaintiesAxis_BB55C4BB6EC91E794922A4DF4048BEAA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_FinancialInstrumentsAndRisksUncertaintiesAxis_BB55C4BB6EC91E794922A4DF4048BEAA" xlink:to="lab_pll_FinancialInstrumentsAndRisksUncertaintiesAxis_BB55C4BB6EC91E794922A4DF4048BEAA" xlink:type="arc" />
    <link:label id="lab_pll_FinancialInstrumentsAndRisksUncertaintiesDomain_5352D3B378391E67FDC5A4DF40482043_verboseLabel_en-US" xlink:label="lab_pll_FinancialInstrumentsAndRisksUncertaintiesDomain_5352D3B378391E67FDC5A4DF40482043" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Financial Instruments and Risks Uncertainties [Domain]</link:label>
    <link:label id="lab_pll_FinancialInstrumentsAndRisksUncertaintiesDomain_5352D3B378391E67FDC5A4DF40482043_label_en-US" xlink:label="lab_pll_FinancialInstrumentsAndRisksUncertaintiesDomain_5352D3B378391E67FDC5A4DF40482043" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Instruments and Risks Uncertainties [Domain]</link:label>
    <link:label id="lab_pll_FinancialInstrumentsAndRisksUncertaintiesDomain_5352D3B378391E67FDC5A4DF40482043_documentation_en-US" xlink:label="lab_pll_FinancialInstrumentsAndRisksUncertaintiesDomain_5352D3B378391E67FDC5A4DF40482043" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financial Instruments and Risks Uncertainties [Domain]</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_FinancialInstrumentsAndRisksUncertaintiesDomain" xlink:label="loc_pll_FinancialInstrumentsAndRisksUncertaintiesDomain_5352D3B378391E67FDC5A4DF40482043" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_FinancialInstrumentsAndRisksUncertaintiesDomain_5352D3B378391E67FDC5A4DF40482043" xlink:to="lab_pll_FinancialInstrumentsAndRisksUncertaintiesDomain_5352D3B378391E67FDC5A4DF40482043" xlink:type="arc" />
    <link:label id="lab_pll_SellingGeneralAndAdministrativeExpensesMember_732CD7380931BA320792A4DF404898CE_terseLabel_en-US" xlink:label="lab_pll_SellingGeneralAndAdministrativeExpensesMember_732CD7380931BA320792A4DF404898CE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Selling General and Administrative Expenses [Member]</link:label>
    <link:label id="lab_pll_SellingGeneralAndAdministrativeExpensesMember_732CD7380931BA320792A4DF404898CE_label_en-US" xlink:label="lab_pll_SellingGeneralAndAdministrativeExpensesMember_732CD7380931BA320792A4DF404898CE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Selling General and Administrative Expenses [Member]</link:label>
    <link:label id="lab_pll_SellingGeneralAndAdministrativeExpensesMember_732CD7380931BA320792A4DF404898CE_documentation_en-US" xlink:label="lab_pll_SellingGeneralAndAdministrativeExpensesMember_732CD7380931BA320792A4DF404898CE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Selling General and Administrative Expenses [Member]</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_SellingGeneralAndAdministrativeExpensesMember" xlink:label="loc_pll_SellingGeneralAndAdministrativeExpensesMember_732CD7380931BA320792A4DF404898CE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_SellingGeneralAndAdministrativeExpensesMember_732CD7380931BA320792A4DF404898CE" xlink:to="lab_pll_SellingGeneralAndAdministrativeExpensesMember_732CD7380931BA320792A4DF404898CE" xlink:type="arc" />
    <link:label id="lab_pll_DerivativeFinancialInstrumentsNotDesignatedAsHedgingInstrumentsLineItems_9B76DC44C3E1F85DBEADA4DF4048F34D_verboseLabel_en-US" xlink:label="lab_pll_DerivativeFinancialInstrumentsNotDesignatedAsHedgingInstrumentsLineItems_9B76DC44C3E1F85DBEADA4DF4048F34D" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Derivative financial instruments not designated as hedging instruments [Line Items]</link:label>
    <link:label id="lab_pll_DerivativeFinancialInstrumentsNotDesignatedAsHedgingInstrumentsLineItems_9B76DC44C3E1F85DBEADA4DF4048F34D_label_en-US" xlink:label="lab_pll_DerivativeFinancialInstrumentsNotDesignatedAsHedgingInstrumentsLineItems_9B76DC44C3E1F85DBEADA4DF4048F34D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative financial instruments not designated as hedging instruments [Line Items]</link:label>
    <link:label id="lab_pll_DerivativeFinancialInstrumentsNotDesignatedAsHedgingInstrumentsLineItems_9B76DC44C3E1F85DBEADA4DF4048F34D_documentation_en-US" xlink:label="lab_pll_DerivativeFinancialInstrumentsNotDesignatedAsHedgingInstrumentsLineItems_9B76DC44C3E1F85DBEADA4DF4048F34D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Derivative financial instruments not designated as hedging instruments [Line Items]</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_DerivativeFinancialInstrumentsNotDesignatedAsHedgingInstrumentsLineItems" xlink:label="loc_pll_DerivativeFinancialInstrumentsNotDesignatedAsHedgingInstrumentsLineItems_9B76DC44C3E1F85DBEADA4DF4048F34D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_DerivativeFinancialInstrumentsNotDesignatedAsHedgingInstrumentsLineItems_9B76DC44C3E1F85DBEADA4DF4048F34D" xlink:to="lab_pll_DerivativeFinancialInstrumentsNotDesignatedAsHedgingInstrumentsLineItems_9B76DC44C3E1F85DBEADA4DF4048F34D" xlink:type="arc" />
    <link:label id="lab_us-gaap_GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments_C7977A5890FDEDE66A77A4DF4048F6BE_verboseLabel_en-US" xlink:label="lab_us-gaap_GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments_C7977A5890FDEDE66A77A4DF4048F6BE" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Foreign exchange forward contracts</link:label>
    <link:label id="lab_us-gaap_GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments_C7977A5890FDEDE66A77A4DF4048F6BE_label_en-US" xlink:label="lab_us-gaap_GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments_C7977A5890FDEDE66A77A4DF4048F6BE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments" xlink:label="loc_us-gaap_GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments_C7977A5890FDEDE66A77A4DF4048F6BE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments_C7977A5890FDEDE66A77A4DF4048F6BE" xlink:to="lab_us-gaap_GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments_C7977A5890FDEDE66A77A4DF4048F6BE" xlink:type="arc" />
    <link:label id="lab_us-gaap_CompensationAndRetirementDisclosureAbstract_D5C6CAD579CD9B2EE53179289F0CE3C6_label_en-US" xlink:label="lab_us-gaap_CompensationAndRetirementDisclosureAbstract_D5C6CAD579CD9B2EE53179289F0CE3C6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Compensation and Retirement Disclosure [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:label="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_D5C6CAD579CD9B2EE53179289F0CE3C6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_D5C6CAD579CD9B2EE53179289F0CE3C6" xlink:to="lab_us-gaap_CompensationAndRetirementDisclosureAbstract_D5C6CAD579CD9B2EE53179289F0CE3C6" xlink:type="arc" />
    <link:label id="lab_pll_PensionAndProfitSharingPlansAndArrangementsDetailsAbstract_F06A3A30CC6546263B0AA4DF3BF8DB2A_label_en-US" xlink:label="lab_pll_PensionAndProfitSharingPlansAndArrangementsDetailsAbstract_F06A3A30CC6546263B0AA4DF3BF8DB2A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pension and Profit Sharing Plans and Arrangements Details [Abstract]</link:label>
    <link:label id="lab_pll_PensionAndProfitSharingPlansAndArrangementsDetailsAbstract_F06A3A30CC6546263B0AA4DF3BF8DB2A_documentation_en-US" xlink:label="lab_pll_PensionAndProfitSharingPlansAndArrangementsDetailsAbstract_F06A3A30CC6546263B0AA4DF3BF8DB2A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">-- None. No documentation exists for this element. --</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_PensionAndProfitSharingPlansAndArrangementsDetailsAbstract" xlink:label="loc_pll_PensionAndProfitSharingPlansAndArrangementsDetailsAbstract_F06A3A30CC6546263B0AA4DF3BF8DB2A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_PensionAndProfitSharingPlansAndArrangementsDetailsAbstract_F06A3A30CC6546263B0AA4DF3BF8DB2A" xlink:to="lab_pll_PensionAndProfitSharingPlansAndArrangementsDetailsAbstract_F06A3A30CC6546263B0AA4DF3BF8DB2A" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_C13B1947E0DB5C42E2BFA4DF3BF84D5D_verboseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_C13B1947E0DB5C42E2BFA4DF3BF84D5D" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Defined Benefit Plans Disclosures [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_C13B1947E0DB5C42E2BFA4DF3BF84D5D_label_en-US" xlink:label="lab_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_C13B1947E0DB5C42E2BFA4DF3BF84D5D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Defined Benefit Plans Disclosures [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_C13B1947E0DB5C42E2BFA4DF3BF84D5D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_C13B1947E0DB5C42E2BFA4DF3BF84D5D" xlink:to="lab_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_C13B1947E0DB5C42E2BFA4DF3BF84D5D" xlink:type="arc" />
    <link:label id="lab_us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis_8BDC410075D1DD8B79DCA4DF3BF82EB7_verboseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis_8BDC410075D1DD8B79DCA4DF3BF82EB7" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Axis]</link:label>
    <link:label id="lab_us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis_8BDC410075D1DD8B79DCA4DF3BF82EB7_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis_8BDC410075D1DD8B79DCA4DF3BF82EB7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis" xlink:label="loc_us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis_8BDC410075D1DD8B79DCA4DF3BF82EB7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis_8BDC410075D1DD8B79DCA4DF3BF82EB7" xlink:to="lab_us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis_8BDC410075D1DD8B79DCA4DF3BF82EB7" xlink:type="arc" />
    <link:label id="lab_us-gaap_DefinedBenefitPlansDomain_23B544650E75B5486496A4DF3BF903E0_verboseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlansDomain_23B544650E75B5486496A4DF3BF903E0" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Defined Benefit Plans and Other Postretirement Benefit Plans [Domain]</link:label>
    <link:label id="lab_us-gaap_DefinedBenefitPlansDomain_23B544650E75B5486496A4DF3BF903E0_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlansDomain_23B544650E75B5486496A4DF3BF903E0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Defined Benefit Plans and Other Postretirement Benefit Plans [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DefinedBenefitPlansDomain" xlink:label="loc_us-gaap_DefinedBenefitPlansDomain_23B544650E75B5486496A4DF3BF903E0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlansDomain_23B544650E75B5486496A4DF3BF903E0" xlink:to="lab_us-gaap_DefinedBenefitPlansDomain_23B544650E75B5486496A4DF3BF903E0" xlink:type="arc" />
    <link:label id="lab_us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember_EAF9CDCC21CB473938D5A4DF3BF94AC0_verboseLabel_en-US" xlink:label="lab_us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember_EAF9CDCC21CB473938D5A4DF3BF94AC0" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">U.S. Plans [Member]</link:label>
    <link:label id="lab_us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember_EAF9CDCC21CB473938D5A4DF3BF94AC0_label_en-US" xlink:label="lab_us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember_EAF9CDCC21CB473938D5A4DF3BF94AC0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">United States Pension Plans of US Entity, Defined Benefit [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember" xlink:label="loc_us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember_EAF9CDCC21CB473938D5A4DF3BF94AC0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember_EAF9CDCC21CB473938D5A4DF3BF94AC0" xlink:to="lab_us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember_EAF9CDCC21CB473938D5A4DF3BF94AC0" xlink:type="arc" />
    <link:label id="lab_us-gaap_ForeignPensionPlansDefinedBenefitMember_187BD8BD19EDBFBEB702A4DF3BF9E780_verboseLabel_en-US" xlink:label="lab_us-gaap_ForeignPensionPlansDefinedBenefitMember_187BD8BD19EDBFBEB702A4DF3BF9E780" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Foreign Plans [Member]</link:label>
    <link:label id="lab_us-gaap_ForeignPensionPlansDefinedBenefitMember_187BD8BD19EDBFBEB702A4DF3BF9E780_label_en-US" xlink:label="lab_us-gaap_ForeignPensionPlansDefinedBenefitMember_187BD8BD19EDBFBEB702A4DF3BF9E780" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Foreign Pension Plans, Defined Benefit [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ForeignPensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_ForeignPensionPlansDefinedBenefitMember_187BD8BD19EDBFBEB702A4DF3BF9E780" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ForeignPensionPlansDefinedBenefitMember_187BD8BD19EDBFBEB702A4DF3BF9E780" xlink:to="lab_us-gaap_ForeignPensionPlansDefinedBenefitMember_187BD8BD19EDBFBEB702A4DF3BF9E780" xlink:type="arc" />
    <link:label id="lab_us-gaap_DefinedBenefitPlanDisclosureLineItems_792B28AF02CC18B93048A4DF3BF9DF67_verboseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanDisclosureLineItems_792B28AF02CC18B93048A4DF3BF9DF67" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Defined Benefit Plan Disclosure [Line Items]</link:label>
    <link:label id="lab_us-gaap_DefinedBenefitPlanDisclosureLineItems_792B28AF02CC18B93048A4DF3BF9DF67_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanDisclosureLineItems_792B28AF02CC18B93048A4DF3BF9DF67" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Defined Benefit Plan Disclosure [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_792B28AF02CC18B93048A4DF3BF9DF67" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_792B28AF02CC18B93048A4DF3BF9DF67" xlink:to="lab_us-gaap_DefinedBenefitPlanDisclosureLineItems_792B28AF02CC18B93048A4DF3BF9DF67" xlink:type="arc" />
    <link:label id="lab_us-gaap_DefinedBenefitPlanServiceCost_CE6EE5D332018B325A8FA4DF3BF91B0D_verboseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanServiceCost_CE6EE5D332018B325A8FA4DF3BF91B0D" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Service cost</link:label>
    <link:label id="lab_us-gaap_DefinedBenefitPlanServiceCost_CE6EE5D332018B325A8FA4DF3BF91B0D_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanServiceCost_CE6EE5D332018B325A8FA4DF3BF91B0D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Defined Benefit Plan, Service Cost</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DefinedBenefitPlanServiceCost" xlink:label="loc_us-gaap_DefinedBenefitPlanServiceCost_CE6EE5D332018B325A8FA4DF3BF91B0D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanServiceCost_CE6EE5D332018B325A8FA4DF3BF91B0D" xlink:to="lab_us-gaap_DefinedBenefitPlanServiceCost_CE6EE5D332018B325A8FA4DF3BF91B0D" xlink:type="arc" />
    <link:label id="lab_us-gaap_DefinedBenefitPlanInterestCost_471E2AE2534B7ED02C53A4DF3BF95A68_verboseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanInterestCost_471E2AE2534B7ED02C53A4DF3BF95A68" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Interest cost</link:label>
    <link:label id="lab_us-gaap_DefinedBenefitPlanInterestCost_471E2AE2534B7ED02C53A4DF3BF95A68_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanInterestCost_471E2AE2534B7ED02C53A4DF3BF95A68" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Defined Benefit Plan, Interest Cost</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DefinedBenefitPlanInterestCost" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_471E2AE2534B7ED02C53A4DF3BF95A68" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanInterestCost_471E2AE2534B7ED02C53A4DF3BF95A68" xlink:to="lab_us-gaap_DefinedBenefitPlanInterestCost_471E2AE2534B7ED02C53A4DF3BF95A68" xlink:type="arc" />
    <link:label id="lab_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_3D46FD0AF5F68BE40709A4DF3BF9E1B2_negatedLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_3D46FD0AF5F68BE40709A4DF3BF9E1B2" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Expected return on plan assets</link:label>
    <link:label id="lab_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_3D46FD0AF5F68BE40709A4DF3BF9E1B2_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_3D46FD0AF5F68BE40709A4DF3BF9E1B2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Defined Benefit Plan, Expected Return on Plan Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_3D46FD0AF5F68BE40709A4DF3BF9E1B2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_3D46FD0AF5F68BE40709A4DF3BF9E1B2" xlink:to="lab_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_3D46FD0AF5F68BE40709A4DF3BF9E1B2" xlink:type="arc" />
    <link:label id="lab_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_8EB333686D7547F696E3A4DF3BF93DD1_verboseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_8EB333686D7547F696E3A4DF3BF93DD1" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Amortization of prior service cost</link:label>
    <link:label id="lab_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_8EB333686D7547F696E3A4DF3BF93DD1_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_8EB333686D7547F696E3A4DF3BF93DD1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Defined Benefit Plan, Amortization of Prior Service Cost (Credit)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_8EB333686D7547F696E3A4DF3BF93DD1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_8EB333686D7547F696E3A4DF3BF93DD1" xlink:to="lab_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_8EB333686D7547F696E3A4DF3BF93DD1" xlink:type="arc" />
    <link:label id="lab_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_5B03E234A4123E3B0771A4DF3BF909A0_negatedLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_5B03E234A4123E3B0771A4DF3BF909A0" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Recognized actuarial loss</link:label>
    <link:label id="lab_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_5B03E234A4123E3B0771A4DF3BF909A0_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_5B03E234A4123E3B0771A4DF3BF909A0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Defined Benefit Plan, Amortization of Gains (Losses)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_5B03E234A4123E3B0771A4DF3BF909A0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_5B03E234A4123E3B0771A4DF3BF909A0" xlink:to="lab_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_5B03E234A4123E3B0771A4DF3BF909A0" xlink:type="arc" />
    <link:label id="lab_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments_C4856473360CFA58C8FEA4DF3BF95AFC_verboseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments_C4856473360CFA58C8FEA4DF3BF95AFC" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Gain due to curtailments and settlements</link:label>
    <link:label id="lab_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments_C4856473360CFA58C8FEA4DF3BF95AFC_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments_C4856473360CFA58C8FEA4DF3BF95AFC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments" xlink:label="loc_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments_C4856473360CFA58C8FEA4DF3BF95AFC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments_C4856473360CFA58C8FEA4DF3BF95AFC" xlink:to="lab_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments_C4856473360CFA58C8FEA4DF3BF95AFC" xlink:type="arc" />
    <link:label id="lab_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_EF957C6FFBBE7939AB82A4DF3BF9B0F4_totalLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_EF957C6FFBBE7939AB82A4DF3BF9B0F4" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net periodic benefit cost</link:label>
    <link:label id="lab_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_EF957C6FFBBE7939AB82A4DF3BF9B0F4_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_EF957C6FFBBE7939AB82A4DF3BF9B0F4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Defined Benefit Plan, Net Periodic Benefit Cost</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_EF957C6FFBBE7939AB82A4DF3BF9B0F4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_EF957C6FFBBE7939AB82A4DF3BF9B0F4" xlink:to="lab_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_EF957C6FFBBE7939AB82A4DF3BF9B0F4" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax_0E4220DA6DB8757B2768A4DF41B51625_verboseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax_0E4220DA6DB8757B2768A4DF41B51625" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Unrealized (losses)/gains arising during the period</link:label>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax_0E4220DA6DB8757B2768A4DF41B51625_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax_0E4220DA6DB8757B2768A4DF41B51625" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, before Tax</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax_0E4220DA6DB8757B2768A4DF41B51625" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax_0E4220DA6DB8757B2768A4DF41B51625" xlink:to="lab_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax_0E4220DA6DB8757B2768A4DF41B51625" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax_63FC670601505393DA6CA4DF41B5D6FC_negatedLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax_63FC670601505393DA6CA4DF41B5D6FC" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Income taxes</link:label>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax_63FC670601505393DA6CA4DF41B5D6FC_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax_63FC670601505393DA6CA4DF41B5D6FC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax_63FC670601505393DA6CA4DF41B5D6FC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax_63FC670601505393DA6CA4DF41B5D6FC" xlink:to="lab_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax_63FC670601505393DA6CA4DF41B5D6FC" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_9FD55190CF177E589C05A4DF41B56917_totalLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_9FD55190CF177E589C05A4DF41B56917" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net unrealized (losses)/gains arising during the period</link:label>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_9FD55190CF177E589C05A4DF41B56917_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_9FD55190CF177E589C05A4DF41B56917" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_9FD55190CF177E589C05A4DF41B56917" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_9FD55190CF177E589C05A4DF41B56917" xlink:to="lab_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_9FD55190CF177E589C05A4DF41B56917" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax_E5EE0425AC8AFEF7FEF0A4DF41B54C2A_negatedLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax_E5EE0425AC8AFEF7FEF0A4DF41B54C2A" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Reclassification adjustment for gains included in net earnings</link:label>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax_E5EE0425AC8AFEF7FEF0A4DF41B54C2A_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax_E5EE0425AC8AFEF7FEF0A4DF41B54C2A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, Net of Tax</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax_E5EE0425AC8AFEF7FEF0A4DF41B54C2A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax_E5EE0425AC8AFEF7FEF0A4DF41B54C2A" xlink:to="lab_us-gaap_OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax_E5EE0425AC8AFEF7FEF0A4DF41B54C2A" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease_44BB13C0994F3E5253BBA4DF41B59F1C_totalLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease_44BB13C0994F3E5253BBA4DF41B59F1C" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Change in unrealized investment (losses)/gains, net</link:label>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease_44BB13C0994F3E5253BBA4DF41B59F1C_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease_44BB13C0994F3E5253BBA4DF41B59F1C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease" xlink:label="loc_us-gaap_OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease_44BB13C0994F3E5253BBA4DF41B59F1C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease_44BB13C0994F3E5253BBA4DF41B59F1C" xlink:to="lab_us-gaap_OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease_44BB13C0994F3E5253BBA4DF41B59F1C" xlink:type="arc" />
    <link:label id="lab_us-gaap_BasisOfAccounting_244E883EB304B049DD5DA4DF365FCB44_verboseLabel_en-US" xlink:label="lab_us-gaap_BasisOfAccounting_244E883EB304B049DD5DA4DF365FCB44" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">BASIS OF PRESENTATION</link:label>
    <link:label id="lab_us-gaap_BasisOfAccounting_244E883EB304B049DD5DA4DF365FCB44_label_en-US" xlink:label="lab_us-gaap_BasisOfAccounting_244E883EB304B049DD5DA4DF365FCB44" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Basis of Accounting [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_BasisOfAccounting" xlink:label="loc_us-gaap_BasisOfAccounting_244E883EB304B049DD5DA4DF365FCB44" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BasisOfAccounting_244E883EB304B049DD5DA4DF365FCB44" xlink:to="lab_us-gaap_BasisOfAccounting_244E883EB304B049DD5DA4DF365FCB44" xlink:type="arc" />
    <link:label id="lab_us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock_E2B15783C08E88F8857BA4DF3EB0492A_verboseLabel_en-US" xlink:label="lab_us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock_E2B15783C08E88F8857BA4DF3EB0492A" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">INVESTMENT SECURITIES</link:label>
    <link:label id="lab_us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock_E2B15783C08E88F8857BA4DF3EB0492A_label_en-US" xlink:label="lab_us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock_E2B15783C08E88F8857BA4DF3EB0492A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock" xlink:label="loc_us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock_E2B15783C08E88F8857BA4DF3EB0492A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock_E2B15783C08E88F8857BA4DF3EB0492A" xlink:to="lab_us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock_E2B15783C08E88F8857BA4DF3EB0492A" xlink:type="arc" />
    <link:label id="lab_pll_PropertyPlantAndEquipmentDetailsAbstract_F72D69B92D8673C5CA09A4DF3810F996_label_en-US" xlink:label="lab_pll_PropertyPlantAndEquipmentDetailsAbstract_F72D69B92D8673C5CA09A4DF3810F996" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment Details [Abstract]</link:label>
    <link:label id="lab_pll_PropertyPlantAndEquipmentDetailsAbstract_F72D69B92D8673C5CA09A4DF3810F996_documentation_en-US" xlink:label="lab_pll_PropertyPlantAndEquipmentDetailsAbstract_F72D69B92D8673C5CA09A4DF3810F996" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment (Details).</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_PropertyPlantAndEquipmentDetailsAbstract" xlink:label="loc_pll_PropertyPlantAndEquipmentDetailsAbstract_F72D69B92D8673C5CA09A4DF3810F996" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_PropertyPlantAndEquipmentDetailsAbstract_F72D69B92D8673C5CA09A4DF3810F996" xlink:to="lab_pll_PropertyPlantAndEquipmentDetailsAbstract_F72D69B92D8673C5CA09A4DF3810F996" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementScenarioAxis_C14DE971D2211CD56315A4DF38102449_terseLabel_en-US" xlink:label="lab_us-gaap_StatementScenarioAxis_C14DE971D2211CD56315A4DF38102449" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Statement, Scenario [Axis]</link:label>
    <link:label id="lab_us-gaap_StatementScenarioAxis_C14DE971D2211CD56315A4DF38102449_label_en-US" xlink:label="lab_us-gaap_StatementScenarioAxis_C14DE971D2211CD56315A4DF38102449" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement, Scenario [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="loc_us-gaap_StatementScenarioAxis_C14DE971D2211CD56315A4DF38102449" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementScenarioAxis_C14DE971D2211CD56315A4DF38102449" xlink:to="lab_us-gaap_StatementScenarioAxis_C14DE971D2211CD56315A4DF38102449" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScenarioUnspecifiedDomain_BDE2E57F93AE6B602CC8A4DF3810E7DF_terseLabel_en-US" xlink:label="lab_us-gaap_ScenarioUnspecifiedDomain_BDE2E57F93AE6B602CC8A4DF3810E7DF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Scenario, Unspecified [Domain]</link:label>
    <link:label id="lab_us-gaap_ScenarioUnspecifiedDomain_BDE2E57F93AE6B602CC8A4DF3810E7DF_label_en-US" xlink:label="lab_us-gaap_ScenarioUnspecifiedDomain_BDE2E57F93AE6B602CC8A4DF3810E7DF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Scenario, Unspecified [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="loc_us-gaap_ScenarioUnspecifiedDomain_BDE2E57F93AE6B602CC8A4DF3810E7DF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScenarioUnspecifiedDomain_BDE2E57F93AE6B602CC8A4DF3810E7DF" xlink:to="lab_us-gaap_ScenarioUnspecifiedDomain_BDE2E57F93AE6B602CC8A4DF3810E7DF" xlink:type="arc" />
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentGross_83B080F2299618329CFAA4DF38104667_verboseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentGross_83B080F2299618329CFAA4DF38104667" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Property, plant and equipment</link:label>
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentGross_83B080F2299618329CFAA4DF38104667_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentGross_83B080F2299618329CFAA4DF38104667" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment, Gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_83B080F2299618329CFAA4DF38104667" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentGross_83B080F2299618329CFAA4DF38104667" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentGross_83B080F2299618329CFAA4DF38104667" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_0BE00A5EEE50D25E3DCEA4DF38100C53_negatedLabel_en-US" xlink:label="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_0BE00A5EEE50D25E3DCEA4DF38100C53" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Less: Accumulated depreciation and amortization</link:label>
    <link:label id="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_0BE00A5EEE50D25E3DCEA4DF38100C53_label_en-US" xlink:label="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_0BE00A5EEE50D25E3DCEA4DF38100C53" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_0BE00A5EEE50D25E3DCEA4DF38100C53" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_0BE00A5EEE50D25E3DCEA4DF38100C53" xlink:to="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_0BE00A5EEE50D25E3DCEA4DF38100C53" xlink:type="arc" />
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentNet_40EC3C9722388BBB816AA4DF38106AD3_totalLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_40EC3C9722388BBB816AA4DF38106AD3" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Property, plant and equipment</link:label>
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentNet_40EC3C9722388BBB816AA4DF38106AD3_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_40EC3C9722388BBB816AA4DF38106AD3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_40EC3C9722388BBB816AA4DF38106AD3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_40EC3C9722388BBB816AA4DF38106AD3" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentNet_40EC3C9722388BBB816AA4DF38106AD3" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementOfFinancialPositionAbstract_5C6AA2ABD207115CC5E1A4DF3568E36A_label_en-US" xlink:label="lab_us-gaap_StatementOfFinancialPositionAbstract_5C6AA2ABD207115CC5E1A4DF3568E36A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of Financial Position [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementOfFinancialPositionAbstract" xlink:label="loc_us-gaap_StatementOfFinancialPositionAbstract_5C6AA2ABD207115CC5E1A4DF3568E36A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_5C6AA2ABD207115CC5E1A4DF3568E36A" xlink:to="lab_us-gaap_StatementOfFinancialPositionAbstract_5C6AA2ABD207115CC5E1A4DF3568E36A" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementClassOfStockAxis_4135699A78467B9B516BA4DF35687958_terseLabel_en-US" xlink:label="lab_us-gaap_StatementClassOfStockAxis_4135699A78467B9B516BA4DF35687958" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Statement Class Of Stock [Axis]</link:label>
    <link:label id="lab_us-gaap_StatementClassOfStockAxis_4135699A78467B9B516BA4DF35687958_label_en-US" xlink:label="lab_us-gaap_StatementClassOfStockAxis_4135699A78467B9B516BA4DF35687958" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Class of Stock [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_4135699A78467B9B516BA4DF35687958" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementClassOfStockAxis_4135699A78467B9B516BA4DF35687958" xlink:to="lab_us-gaap_StatementClassOfStockAxis_4135699A78467B9B516BA4DF35687958" xlink:type="arc" />
    <link:label id="lab_us-gaap_ClassOfStockDomain_42F8647DA7D763134171A4DF3568F0F8_terseLabel_en-US" xlink:label="lab_us-gaap_ClassOfStockDomain_42F8647DA7D763134171A4DF3568F0F8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Class Of Stock [Domain]</link:label>
    <link:label id="lab_us-gaap_ClassOfStockDomain_42F8647DA7D763134171A4DF3568F0F8_label_en-US" xlink:label="lab_us-gaap_ClassOfStockDomain_42F8647DA7D763134171A4DF3568F0F8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Class of Stock [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_42F8647DA7D763134171A4DF3568F0F8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ClassOfStockDomain_42F8647DA7D763134171A4DF3568F0F8" xlink:to="lab_us-gaap_ClassOfStockDomain_42F8647DA7D763134171A4DF3568F0F8" xlink:type="arc" />
    <link:label id="lab_us-gaap_AssetsAbstract_17D81BB41C52D689EC4DA4DF3568461D_verboseLabel_en-US" xlink:label="lab_us-gaap_AssetsAbstract_17D81BB41C52D689EC4DA4DF3568461D" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">ASSETS</link:label>
    <link:label id="lab_us-gaap_AssetsAbstract_17D81BB41C52D689EC4DA4DF3568461D_label_en-US" xlink:label="lab_us-gaap_AssetsAbstract_17D81BB41C52D689EC4DA4DF3568461D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AssetsAbstract" xlink:label="loc_us-gaap_AssetsAbstract_17D81BB41C52D689EC4DA4DF3568461D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetsAbstract_17D81BB41C52D689EC4DA4DF3568461D" xlink:to="lab_us-gaap_AssetsAbstract_17D81BB41C52D689EC4DA4DF3568461D" xlink:type="arc" />
    <link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_6C359EA5AC16A2515606A4DF35689452_terseLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_6C359EA5AC16A2515606A4DF35689452" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash and cash equivalents</link:label>
    <link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_6C359EA5AC16A2515606A4DF35689452_label_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_6C359EA5AC16A2515606A4DF35689452" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash and Cash Equivalents, at Carrying Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_6C359EA5AC16A2515606A4DF35689452" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_6C359EA5AC16A2515606A4DF35689452" xlink:to="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_6C359EA5AC16A2515606A4DF35689452" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccountsReceivableNetCurrent_705B10001259AF06C04DA4DF35683416_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsReceivableNetCurrent_705B10001259AF06C04DA4DF35683416" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accounts receivable</link:label>
    <link:label id="lab_us-gaap_AccountsReceivableNetCurrent_705B10001259AF06C04DA4DF35683416_label_en-US" xlink:label="lab_us-gaap_AccountsReceivableNetCurrent_705B10001259AF06C04DA4DF35683416" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounts Receivable, Net, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_705B10001259AF06C04DA4DF35683416" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsReceivableNetCurrent_705B10001259AF06C04DA4DF35683416" xlink:to="lab_us-gaap_AccountsReceivableNetCurrent_705B10001259AF06C04DA4DF35683416" xlink:type="arc" />
    <link:label id="lab_us-gaap_InventoryNet_F486076F6EDE30A0D68BA4DF356880AA_terseLabel_en-US" xlink:label="lab_us-gaap_InventoryNet_F486076F6EDE30A0D68BA4DF356880AA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Inventories</link:label>
    <link:label id="lab_us-gaap_InventoryNet_F486076F6EDE30A0D68BA4DF356880AA_label_en-US" xlink:label="lab_us-gaap_InventoryNet_F486076F6EDE30A0D68BA4DF356880AA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventory, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InventoryNet" xlink:label="loc_us-gaap_InventoryNet_F486076F6EDE30A0D68BA4DF356880AA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryNet_F486076F6EDE30A0D68BA4DF356880AA" xlink:to="lab_us-gaap_InventoryNet_F486076F6EDE30A0D68BA4DF356880AA" xlink:type="arc" />
    <link:label id="lab_us-gaap_PrepaidExpenseCurrent_F06668A72CBD25766F38A4DF35689EAA_terseLabel_en-US" xlink:label="lab_us-gaap_PrepaidExpenseCurrent_F06668A72CBD25766F38A4DF35689EAA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Prepaid expenses</link:label>
    <link:label id="lab_us-gaap_PrepaidExpenseCurrent_F06668A72CBD25766F38A4DF35689EAA_label_en-US" xlink:label="lab_us-gaap_PrepaidExpenseCurrent_F06668A72CBD25766F38A4DF35689EAA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Prepaid Expense, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PrepaidExpenseCurrent" xlink:label="loc_us-gaap_PrepaidExpenseCurrent_F06668A72CBD25766F38A4DF35689EAA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PrepaidExpenseCurrent_F06668A72CBD25766F38A4DF35689EAA" xlink:to="lab_us-gaap_PrepaidExpenseCurrent_F06668A72CBD25766F38A4DF35689EAA" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherAssetsCurrent_F9285D9A33FCEC25DAD5A4DF3568F6D2_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsCurrent_F9285D9A33FCEC25DAD5A4DF3568F6D2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other current assets</link:label>
    <link:label id="lab_us-gaap_OtherAssetsCurrent_F9285D9A33FCEC25DAD5A4DF3568F6D2_label_en-US" xlink:label="lab_us-gaap_OtherAssetsCurrent_F9285D9A33FCEC25DAD5A4DF3568F6D2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Assets, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherAssetsCurrent" xlink:label="loc_us-gaap_OtherAssetsCurrent_F9285D9A33FCEC25DAD5A4DF3568F6D2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAssetsCurrent_F9285D9A33FCEC25DAD5A4DF3568F6D2" xlink:to="lab_us-gaap_OtherAssetsCurrent_F9285D9A33FCEC25DAD5A4DF3568F6D2" xlink:type="arc" />
    <link:label id="lab_us-gaap_AssetsCurrent_F5A36B8919B8B2B572BCA4DF3569A6C2_totalLabel_en-US" xlink:label="lab_us-gaap_AssetsCurrent_F5A36B8919B8B2B572BCA4DF3569A6C2" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total current assets</link:label>
    <link:label id="lab_us-gaap_AssetsCurrent_F5A36B8919B8B2B572BCA4DF3569A6C2_label_en-US" xlink:label="lab_us-gaap_AssetsCurrent_F5A36B8919B8B2B572BCA4DF3569A6C2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="loc_us-gaap_AssetsCurrent_F5A36B8919B8B2B572BCA4DF3569A6C2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetsCurrent_F5A36B8919B8B2B572BCA4DF3569A6C2" xlink:to="lab_us-gaap_AssetsCurrent_F5A36B8919B8B2B572BCA4DF3569A6C2" xlink:type="arc" />
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentNet_642F39A148A3ABF02440A4DF3569A5DA_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_642F39A148A3ABF02440A4DF3569A5DA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Property, plant and equipment</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_642F39A148A3ABF02440A4DF3569A5DA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_642F39A148A3ABF02440A4DF3569A5DA" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentNet_642F39A148A3ABF02440A4DF3569A5DA" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsNet_A8CF0C21AE43565C2FD5A4DF35692E72_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsNet_A8CF0C21AE43565C2FD5A4DF35692E72" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Intangible assets</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsNet_A8CF0C21AE43565C2FD5A4DF35692E72_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsNet_A8CF0C21AE43565C2FD5A4DF35692E72" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_A8CF0C21AE43565C2FD5A4DF35692E72" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_A8CF0C21AE43565C2FD5A4DF35692E72" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsNet_A8CF0C21AE43565C2FD5A4DF35692E72" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherAssetsNoncurrent_4E08C32AEC12E32E8834A4DF3569375F_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsNoncurrent_4E08C32AEC12E32E8834A4DF3569375F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other non-current assets</link:label>
    <link:label id="lab_us-gaap_OtherAssetsNoncurrent_4E08C32AEC12E32E8834A4DF3569375F_label_en-US" xlink:label="lab_us-gaap_OtherAssetsNoncurrent_4E08C32AEC12E32E8834A4DF3569375F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Assets, Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_4E08C32AEC12E32E8834A4DF3569375F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAssetsNoncurrent_4E08C32AEC12E32E8834A4DF3569375F" xlink:to="lab_us-gaap_OtherAssetsNoncurrent_4E08C32AEC12E32E8834A4DF3569375F" xlink:type="arc" />
    <link:label id="lab_us-gaap_Assets_0B136653ED6A032A2314A4DF35697142_totalLabel_en-US" xlink:label="lab_us-gaap_Assets_0B136653ED6A032A2314A4DF35697142" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total assets</link:label>
    <link:label id="lab_us-gaap_Assets_0B136653ED6A032A2314A4DF35697142_label_en-US" xlink:label="lab_us-gaap_Assets_0B136653ED6A032A2314A4DF35697142" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_0B136653ED6A032A2314A4DF35697142" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Assets_0B136653ED6A032A2314A4DF35697142" xlink:to="lab_us-gaap_Assets_0B136653ED6A032A2314A4DF35697142" xlink:type="arc" />
    <link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_993D922E553A8C8D288AA4DF35692A17_verboseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_993D922E553A8C8D288AA4DF35692A17" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">LIABILITIES AND STOCKHOLDERS' EQUITY</link:label>
    <link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_993D922E553A8C8D288AA4DF35692A17_label_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_993D922E553A8C8D288AA4DF35692A17" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities and Equity [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_993D922E553A8C8D288AA4DF35692A17" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_993D922E553A8C8D288AA4DF35692A17" xlink:to="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_993D922E553A8C8D288AA4DF35692A17" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShortTermBorrowings_D1EA1CD8CE6B2B1D8C53A4DF3569B728_terseLabel_en-US" xlink:label="lab_us-gaap_ShortTermBorrowings_D1EA1CD8CE6B2B1D8C53A4DF3569B728" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Notes payable</link:label>
    <link:label id="lab_us-gaap_ShortTermBorrowings_D1EA1CD8CE6B2B1D8C53A4DF3569B728_label_en-US" xlink:label="lab_us-gaap_ShortTermBorrowings_D1EA1CD8CE6B2B1D8C53A4DF3569B728" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Short-term Debt</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ShortTermBorrowings" xlink:label="loc_us-gaap_ShortTermBorrowings_D1EA1CD8CE6B2B1D8C53A4DF3569B728" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShortTermBorrowings_D1EA1CD8CE6B2B1D8C53A4DF3569B728" xlink:to="lab_us-gaap_ShortTermBorrowings_D1EA1CD8CE6B2B1D8C53A4DF3569B728" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccountsPayableAndOtherAccruedLiabilitiesCurrent_D48D1EB66DF1791C0CD3A4DF356939FF_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsPayableAndOtherAccruedLiabilitiesCurrent_D48D1EB66DF1791C0CD3A4DF356939FF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accounts payable and other current liabilities</link:label>
    <link:label id="lab_us-gaap_AccountsPayableAndOtherAccruedLiabilitiesCurrent_D48D1EB66DF1791C0CD3A4DF356939FF_label_en-US" xlink:label="lab_us-gaap_AccountsPayableAndOtherAccruedLiabilitiesCurrent_D48D1EB66DF1791C0CD3A4DF356939FF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounts Payable and Other Accrued Liabilities, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccountsPayableAndOtherAccruedLiabilitiesCurrent" xlink:label="loc_us-gaap_AccountsPayableAndOtherAccruedLiabilitiesCurrent_D48D1EB66DF1791C0CD3A4DF356939FF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsPayableAndOtherAccruedLiabilitiesCurrent_D48D1EB66DF1791C0CD3A4DF356939FF" xlink:to="lab_us-gaap_AccountsPayableAndOtherAccruedLiabilitiesCurrent_D48D1EB66DF1791C0CD3A4DF356939FF" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccruedIncomeTaxesCurrent_0B03082EF1A080EABEB9A4DF3569A213_terseLabel_en-US" xlink:label="lab_us-gaap_AccruedIncomeTaxesCurrent_0B03082EF1A080EABEB9A4DF3569A213" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income taxes payable</link:label>
    <link:label id="lab_us-gaap_AccruedIncomeTaxesCurrent_0B03082EF1A080EABEB9A4DF3569A213_label_en-US" xlink:label="lab_us-gaap_AccruedIncomeTaxesCurrent_0B03082EF1A080EABEB9A4DF3569A213" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accrued Income Taxes, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccruedIncomeTaxesCurrent" xlink:label="loc_us-gaap_AccruedIncomeTaxesCurrent_0B03082EF1A080EABEB9A4DF3569A213" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccruedIncomeTaxesCurrent_0B03082EF1A080EABEB9A4DF3569A213" xlink:to="lab_us-gaap_AccruedIncomeTaxesCurrent_0B03082EF1A080EABEB9A4DF3569A213" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_52758E83BD19C3533036A4DF3569344D_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_52758E83BD19C3533036A4DF3569344D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Current portion of long-term debt</link:label>
    <link:label id="lab_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_52758E83BD19C3533036A4DF3569344D_label_en-US" xlink:label="lab_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_52758E83BD19C3533036A4DF3569344D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt and Capital Lease Obligations, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_52758E83BD19C3533036A4DF3569344D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_52758E83BD19C3533036A4DF3569344D" xlink:to="lab_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_52758E83BD19C3533036A4DF3569344D" xlink:type="arc" />
    <link:label id="lab_us-gaap_DividendsPayableCurrent_2847C2AEDFC95C4155ABA4DF356960D8_terseLabel_en-US" xlink:label="lab_us-gaap_DividendsPayableCurrent_2847C2AEDFC95C4155ABA4DF356960D8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Dividends payable</link:label>
    <link:label id="lab_us-gaap_DividendsPayableCurrent_2847C2AEDFC95C4155ABA4DF356960D8_label_en-US" xlink:label="lab_us-gaap_DividendsPayableCurrent_2847C2AEDFC95C4155ABA4DF356960D8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Dividends Payable, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DividendsPayableCurrent" xlink:label="loc_us-gaap_DividendsPayableCurrent_2847C2AEDFC95C4155ABA4DF356960D8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DividendsPayableCurrent_2847C2AEDFC95C4155ABA4DF356960D8" xlink:to="lab_us-gaap_DividendsPayableCurrent_2847C2AEDFC95C4155ABA4DF356960D8" xlink:type="arc" />
    <link:label id="lab_us-gaap_LiabilitiesCurrent_53D45612BB63B2E01B96A4DF35694451_totalLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrent_53D45612BB63B2E01B96A4DF35694451" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total current liabilities</link:label>
    <link:label id="lab_us-gaap_LiabilitiesCurrent_53D45612BB63B2E01B96A4DF35694451_label_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrent_53D45612BB63B2E01B96A4DF35694451" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_us-gaap_LiabilitiesCurrent_53D45612BB63B2E01B96A4DF35694451" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesCurrent_53D45612BB63B2E01B96A4DF35694451" xlink:to="lab_us-gaap_LiabilitiesCurrent_53D45612BB63B2E01B96A4DF35694451" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongTermDebtAndCapitalLeaseObligations_69D63ABEE3EBDDA3E1D0A4DF35696DC8_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtAndCapitalLeaseObligations_69D63ABEE3EBDDA3E1D0A4DF35696DC8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term debt, net of current portion</link:label>
    <link:label id="lab_us-gaap_LongTermDebtAndCapitalLeaseObligations_69D63ABEE3EBDDA3E1D0A4DF35696DC8_label_en-US" xlink:label="lab_us-gaap_LongTermDebtAndCapitalLeaseObligations_69D63ABEE3EBDDA3E1D0A4DF35696DC8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt and Capital Lease Obligations</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_69D63ABEE3EBDDA3E1D0A4DF35696DC8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_69D63ABEE3EBDDA3E1D0A4DF35696DC8" xlink:to="lab_us-gaap_LongTermDebtAndCapitalLeaseObligations_69D63ABEE3EBDDA3E1D0A4DF35696DC8" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccruedIncomeTaxesNoncurrent_29FA4E0E18DFFDDEE5DCA4DF3569A498_terseLabel_en-US" xlink:label="lab_us-gaap_AccruedIncomeTaxesNoncurrent_29FA4E0E18DFFDDEE5DCA4DF3569A498" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income taxes payable - non-current</link:label>
    <link:label id="lab_us-gaap_AccruedIncomeTaxesNoncurrent_29FA4E0E18DFFDDEE5DCA4DF3569A498_label_en-US" xlink:label="lab_us-gaap_AccruedIncomeTaxesNoncurrent_29FA4E0E18DFFDDEE5DCA4DF3569A498" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accrued Income Taxes, Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccruedIncomeTaxesNoncurrent" xlink:label="loc_us-gaap_AccruedIncomeTaxesNoncurrent_29FA4E0E18DFFDDEE5DCA4DF3569A498" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccruedIncomeTaxesNoncurrent_29FA4E0E18DFFDDEE5DCA4DF3569A498" xlink:to="lab_us-gaap_AccruedIncomeTaxesNoncurrent_29FA4E0E18DFFDDEE5DCA4DF3569A498" xlink:type="arc" />
    <link:label id="lab_pll_DeferredTaxesAndOtherNonCurrentLiabilities_1C8FD370F13E394ADF3FA4DF35698F31_terseLabel_en-US" xlink:label="lab_pll_DeferredTaxesAndOtherNonCurrentLiabilities_1C8FD370F13E394ADF3FA4DF35698F31" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred taxes and other non-current liabilities</link:label>
    <link:label id="lab_pll_DeferredTaxesAndOtherNonCurrentLiabilities_1C8FD370F13E394ADF3FA4DF35698F31_label_en-US" xlink:label="lab_pll_DeferredTaxesAndOtherNonCurrentLiabilities_1C8FD370F13E394ADF3FA4DF35698F31" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Taxes And Other Non Current Liabilities</link:label>
    <link:label id="lab_pll_DeferredTaxesAndOtherNonCurrentLiabilities_1C8FD370F13E394ADF3FA4DF35698F31_documentation_en-US" xlink:label="lab_pll_DeferredTaxesAndOtherNonCurrentLiabilities_1C8FD370F13E394ADF3FA4DF35698F31" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the noncurrent portion of deferred tax liabilities, which result from applying the applicable tax rate to net taxable temporary differences pertaining to each jurisdiction to which the entity is obligated to pay income tax. Also the aggregate carrying amount, as of the balance sheet date, of noncurrent obligations not separately disclosed in the balance sheet.</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_DeferredTaxesAndOtherNonCurrentLiabilities" xlink:label="loc_pll_DeferredTaxesAndOtherNonCurrentLiabilities_1C8FD370F13E394ADF3FA4DF35698F31" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_DeferredTaxesAndOtherNonCurrentLiabilities_1C8FD370F13E394ADF3FA4DF35698F31" xlink:to="lab_pll_DeferredTaxesAndOtherNonCurrentLiabilities_1C8FD370F13E394ADF3FA4DF35698F31" xlink:type="arc" />
    <link:label id="lab_us-gaap_Liabilities_BBEC561957A7402D58E3A4DF35695C41_totalLabel_en-US" xlink:label="lab_us-gaap_Liabilities_BBEC561957A7402D58E3A4DF35695C41" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total liabilities</link:label>
    <link:label id="lab_us-gaap_Liabilities_BBEC561957A7402D58E3A4DF35695C41_label_en-US" xlink:label="lab_us-gaap_Liabilities_BBEC561957A7402D58E3A4DF35695C41" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_Liabilities" xlink:label="loc_us-gaap_Liabilities_BBEC561957A7402D58E3A4DF35695C41" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Liabilities_BBEC561957A7402D58E3A4DF35695C41" xlink:to="lab_us-gaap_Liabilities_BBEC561957A7402D58E3A4DF35695C41" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockholdersEquityAbstract_82FA42BDBC8783F10114A4DF3569B9AC_verboseLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityAbstract_82FA42BDBC8783F10114A4DF3569B9AC" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Stockholders' equity:</link:label>
    <link:label id="lab_us-gaap_StockholdersEquityAbstract_82FA42BDBC8783F10114A4DF3569B9AC_label_en-US" xlink:label="lab_us-gaap_StockholdersEquityAbstract_82FA42BDBC8783F10114A4DF3569B9AC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stockholders' Equity Attributable to Parent [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StockholdersEquityAbstract" xlink:label="loc_us-gaap_StockholdersEquityAbstract_82FA42BDBC8783F10114A4DF3569B9AC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquityAbstract_82FA42BDBC8783F10114A4DF3569B9AC" xlink:to="lab_us-gaap_StockholdersEquityAbstract_82FA42BDBC8783F10114A4DF3569B9AC" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockValue_B9CFA0E52562DBA2D8E2A4DF3569F27D_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockValue_B9CFA0E52562DBA2D8E2A4DF3569F27D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Common stock, par value $.10 per share</link:label>
    <link:label id="lab_us-gaap_CommonStockValue_B9CFA0E52562DBA2D8E2A4DF3569F27D_label_en-US" xlink:label="lab_us-gaap_CommonStockValue_B9CFA0E52562DBA2D8E2A4DF3569F27D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stock, Value, Issued</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CommonStockValue" xlink:label="loc_us-gaap_CommonStockValue_B9CFA0E52562DBA2D8E2A4DF3569F27D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockValue_B9CFA0E52562DBA2D8E2A4DF3569F27D" xlink:to="lab_us-gaap_CommonStockValue_B9CFA0E52562DBA2D8E2A4DF3569F27D" xlink:type="arc" />
    <link:label id="lab_us-gaap_AdditionalPaidInCapitalCommonStock_E785DDAF642E95D0600DA4DF3569780C_terseLabel_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalCommonStock_E785DDAF642E95D0600DA4DF3569780C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Capital in excess of par value</link:label>
    <link:label id="lab_us-gaap_AdditionalPaidInCapitalCommonStock_E785DDAF642E95D0600DA4DF3569780C_label_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalCommonStock_E785DDAF642E95D0600DA4DF3569780C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Additional Paid in Capital, Common Stock</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AdditionalPaidInCapitalCommonStock" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_E785DDAF642E95D0600DA4DF3569780C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AdditionalPaidInCapitalCommonStock_E785DDAF642E95D0600DA4DF3569780C" xlink:to="lab_us-gaap_AdditionalPaidInCapitalCommonStock_E785DDAF642E95D0600DA4DF3569780C" xlink:type="arc" />
    <link:label id="lab_us-gaap_RetainedEarningsAccumulatedDeficit_7B158EDD8476738C7A26A4DF3569650F_terseLabel_en-US" xlink:label="lab_us-gaap_RetainedEarningsAccumulatedDeficit_7B158EDD8476738C7A26A4DF3569650F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Retained earnings</link:label>
    <link:label id="lab_us-gaap_RetainedEarningsAccumulatedDeficit_7B158EDD8476738C7A26A4DF3569650F_label_en-US" xlink:label="lab_us-gaap_RetainedEarningsAccumulatedDeficit_7B158EDD8476738C7A26A4DF3569650F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Retained Earnings (Accumulated Deficit)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_7B158EDD8476738C7A26A4DF3569650F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RetainedEarningsAccumulatedDeficit_7B158EDD8476738C7A26A4DF3569650F" xlink:to="lab_us-gaap_RetainedEarningsAccumulatedDeficit_7B158EDD8476738C7A26A4DF3569650F" xlink:type="arc" />
    <link:label id="lab_us-gaap_TreasuryStockValue_5B77F1C1B30A0E834DD7A4DF356948A3_negatedLabel_en-US" xlink:label="lab_us-gaap_TreasuryStockValue_5B77F1C1B30A0E834DD7A4DF356948A3" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Treasury stock, at cost</link:label>
    <link:label id="lab_us-gaap_TreasuryStockValue_5B77F1C1B30A0E834DD7A4DF356948A3_label_en-US" xlink:label="lab_us-gaap_TreasuryStockValue_5B77F1C1B30A0E834DD7A4DF356948A3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Treasury Stock, Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_TreasuryStockValue" xlink:label="loc_us-gaap_TreasuryStockValue_5B77F1C1B30A0E834DD7A4DF356948A3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TreasuryStockValue_5B77F1C1B30A0E834DD7A4DF356948A3" xlink:to="lab_us-gaap_TreasuryStockValue_5B77F1C1B30A0E834DD7A4DF356948A3" xlink:type="arc" />
    <link:label id="lab_us-gaap_ReceivableFromOfficersAndDirectorsForIssuanceOfCapitalStock_7A7B30A733133B4AC741A4DF3569E12E_negatedLabel_en-US" xlink:label="lab_us-gaap_ReceivableFromOfficersAndDirectorsForIssuanceOfCapitalStock_7A7B30A733133B4AC741A4DF3569E12E" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Stock option loans</link:label>
    <link:label id="lab_us-gaap_ReceivableFromOfficersAndDirectorsForIssuanceOfCapitalStock_7A7B30A733133B4AC741A4DF3569E12E_label_en-US" xlink:label="lab_us-gaap_ReceivableFromOfficersAndDirectorsForIssuanceOfCapitalStock_7A7B30A733133B4AC741A4DF3569E12E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Receivable from Officers and Directors for Issuance of Capital Stock</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ReceivableFromOfficersAndDirectorsForIssuanceOfCapitalStock" xlink:label="loc_us-gaap_ReceivableFromOfficersAndDirectorsForIssuanceOfCapitalStock_7A7B30A733133B4AC741A4DF3569E12E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ReceivableFromOfficersAndDirectorsForIssuanceOfCapitalStock_7A7B30A733133B4AC741A4DF3569E12E" xlink:to="lab_us-gaap_ReceivableFromOfficersAndDirectorsForIssuanceOfCapitalStock_7A7B30A733133B4AC741A4DF3569E12E" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstract_BD6D687DE43641E1CE1CA4DF35697CE8_verboseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstract_BD6D687DE43641E1CE1CA4DF35697CE8" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Accumulated other comprehensive income/(loss):</link:label>
    <link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstract_BD6D687DE43641E1CE1CA4DF35697CE8_label_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstract_BD6D687DE43641E1CE1CA4DF35697CE8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstract" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstract_BD6D687DE43641E1CE1CA4DF35697CE8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstract_BD6D687DE43641E1CE1CA4DF35697CE8" xlink:to="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstract_BD6D687DE43641E1CE1CA4DF35697CE8" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax_41049909D200D3DACB05A4DF35693DD8_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax_41049909D200D3DACB05A4DF35693DD8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Foreign currency translation</link:label>
    <link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax_41049909D200D3DACB05A4DF35693DD8_label_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax_41049909D200D3DACB05A4DF35693DD8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax_41049909D200D3DACB05A4DF35693DD8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax_41049909D200D3DACB05A4DF35693DD8" xlink:to="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax_41049909D200D3DACB05A4DF35693DD8" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax_3801251ABB23916DBE14A4DF3569EBBB_negatedLabel_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax_3801251ABB23916DBE14A4DF3569EBBB" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Pension liability adjustment</link:label>
    <link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax_3801251ABB23916DBE14A4DF3569EBBB_label_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax_3801251ABB23916DBE14A4DF3569EBBB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax_3801251ABB23916DBE14A4DF3569EBBB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax_3801251ABB23916DBE14A4DF3569EBBB" xlink:to="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax_3801251ABB23916DBE14A4DF3569EBBB" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_5ED1092DD9AA841E8557A4DF3569F39D_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_5ED1092DD9AA841E8557A4DF3569F39D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unrealized investment gains</link:label>
    <link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_5ED1092DD9AA841E8557A4DF3569F39D_label_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_5ED1092DD9AA841E8557A4DF3569F39D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_5ED1092DD9AA841E8557A4DF3569F39D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_5ED1092DD9AA841E8557A4DF3569F39D" xlink:to="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_5ED1092DD9AA841E8557A4DF3569F39D" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_D3DAEA417AD8C09A5F1AA4DF3569E2AF_totalLabel_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_D3DAEA417AD8C09A5F1AA4DF3569E2AF" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total accumulated other comprehensive income/(loss)</link:label>
    <link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_D3DAEA417AD8C09A5F1AA4DF3569E2AF_label_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_D3DAEA417AD8C09A5F1AA4DF3569E2AF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accumulated Other Comprehensive Income (Loss), Net of Tax</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_D3DAEA417AD8C09A5F1AA4DF3569E2AF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_D3DAEA417AD8C09A5F1AA4DF3569E2AF" xlink:to="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_D3DAEA417AD8C09A5F1AA4DF3569E2AF" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockholdersEquity_EA7C809FD8A3D9A35F27A4DF3569BA09_totalLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquity_EA7C809FD8A3D9A35F27A4DF3569BA09" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total stockholders' equity</link:label>
    <link:label id="lab_us-gaap_StockholdersEquity_EA7C809FD8A3D9A35F27A4DF3569BA09_label_en-US" xlink:label="lab_us-gaap_StockholdersEquity_EA7C809FD8A3D9A35F27A4DF3569BA09" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stockholders' Equity Attributable to Parent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaap_StockholdersEquity_EA7C809FD8A3D9A35F27A4DF3569BA09" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquity_EA7C809FD8A3D9A35F27A4DF3569BA09" xlink:to="lab_us-gaap_StockholdersEquity_EA7C809FD8A3D9A35F27A4DF3569BA09" xlink:type="arc" />
    <link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquity_D4EA924F0ADF154693CFA4DF3569C447_totalLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquity_D4EA924F0ADF154693CFA4DF3569C447" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total liabilities and stockholders' equity</link:label>
    <link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquity_D4EA924F0ADF154693CFA4DF3569C447_label_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquity_D4EA924F0ADF154693CFA4DF3569C447" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities and Equity</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_D4EA924F0ADF154693CFA4DF3569C447" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_D4EA924F0ADF154693CFA4DF3569C447" xlink:to="lab_us-gaap_LiabilitiesAndStockholdersEquity_D4EA924F0ADF154693CFA4DF3569C447" xlink:type="arc" />
    <link:label id="lab_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_34DC334F1E532ADBD322A4DF3C2B281F_verboseLabel_en-US" xlink:label="lab_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_34DC334F1E532ADBD322A4DF3C2B281F" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">STOCK-BASED PAYMENT</link:label>
    <link:label id="lab_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_34DC334F1E532ADBD322A4DF3C2B281F_label_en-US" xlink:label="lab_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_34DC334F1E532ADBD322A4DF3C2B281F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of Compensation Related Costs, Share-based Payments [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock" xlink:label="loc_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_34DC334F1E532ADBD322A4DF3C2B281F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_34DC334F1E532ADBD322A4DF3C2B281F" xlink:to="lab_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_34DC334F1E532ADBD322A4DF3C2B281F" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock_0CB274F3460F72C3CA0FA4DF3FE17B88_verboseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock_0CB274F3460F72C3CA0FA4DF3FE17B88" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Fair values of the Company's derivative financial instruments included in the consolidated balance sheets</link:label>
    <link:label id="lab_us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock_0CB274F3460F72C3CA0FA4DF3FE17B88_label_en-US" xlink:label="lab_us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock_0CB274F3460F72C3CA0FA4DF3FE17B88" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock" xlink:label="loc_us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock_0CB274F3460F72C3CA0FA4DF3FE17B88" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock_0CB274F3460F72C3CA0FA4DF3FE17B88" xlink:to="lab_us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock_0CB274F3460F72C3CA0FA4DF3FE17B88" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfOtherDerivativesNotDesignatedAsHedgingInstrumentsStatementsOfFinancialPerformanceAndFinancialPositionLocationTableTextBlock_CC0194416BF4C154768AA4DF3FE13AC6_verboseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfOtherDerivativesNotDesignatedAsHedgingInstrumentsStatementsOfFinancialPerformanceAndFinancialPositionLocationTableTextBlock_CC0194416BF4C154768AA4DF3FE13AC6" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location</link:label>
    <link:label id="lab_us-gaap_ScheduleOfOtherDerivativesNotDesignatedAsHedgingInstrumentsStatementsOfFinancialPerformanceAndFinancialPositionLocationTableTextBlock_CC0194416BF4C154768AA4DF3FE13AC6_label_en-US" xlink:label="lab_us-gaap_ScheduleOfOtherDerivativesNotDesignatedAsHedgingInstrumentsStatementsOfFinancialPerformanceAndFinancialPositionLocationTableTextBlock_CC0194416BF4C154768AA4DF3FE13AC6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfOtherDerivativesNotDesignatedAsHedgingInstrumentsStatementsOfFinancialPerformanceAndFinancialPositionLocationTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfOtherDerivativesNotDesignatedAsHedgingInstrumentsStatementsOfFinancialPerformanceAndFinancialPositionLocationTableTextBlock_CC0194416BF4C154768AA4DF3FE13AC6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfOtherDerivativesNotDesignatedAsHedgingInstrumentsStatementsOfFinancialPerformanceAndFinancialPositionLocationTableTextBlock_CC0194416BF4C154768AA4DF3FE13AC6" xlink:to="lab_us-gaap_ScheduleOfOtherDerivativesNotDesignatedAsHedgingInstrumentsStatementsOfFinancialPerformanceAndFinancialPositionLocationTableTextBlock_CC0194416BF4C154768AA4DF3FE13AC6" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfNetInvestmentHedgesInAccumulatedOtherComprehensiveIncomeLossTableTextBlock_C87CFDC597AFC22BEF60A4DF3FE10F41_verboseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfNetInvestmentHedgesInAccumulatedOtherComprehensiveIncomeLossTableTextBlock_C87CFDC597AFC22BEF60A4DF3FE10F41" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Net Investment Hedges in Accumulated Other Comprehensive Income (Loss)</link:label>
    <link:label id="lab_us-gaap_ScheduleOfNetInvestmentHedgesInAccumulatedOtherComprehensiveIncomeLossTableTextBlock_C87CFDC597AFC22BEF60A4DF3FE10F41_label_en-US" xlink:label="lab_us-gaap_ScheduleOfNetInvestmentHedgesInAccumulatedOtherComprehensiveIncomeLossTableTextBlock_C87CFDC597AFC22BEF60A4DF3FE10F41" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Net Investment Hedges in Accumulated Other Comprehensive Income (Loss) [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfNetInvestmentHedgesInAccumulatedOtherComprehensiveIncomeLossTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfNetInvestmentHedgesInAccumulatedOtherComprehensiveIncomeLossTableTextBlock_C87CFDC597AFC22BEF60A4DF3FE10F41" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfNetInvestmentHedgesInAccumulatedOtherComprehensiveIncomeLossTableTextBlock_C87CFDC597AFC22BEF60A4DF3FE10F41" xlink:to="lab_us-gaap_ScheduleOfNetInvestmentHedgesInAccumulatedOtherComprehensiveIncomeLossTableTextBlock_C87CFDC597AFC22BEF60A4DF3FE10F41" xlink:type="arc" />
    <link:label id="lab_us-gaap_FairValueOfFinancialInstrumentsPolicy_46E40C78C357F481ACDBE9C68DC372C7_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueOfFinancialInstrumentsPolicy_46E40C78C357F481ACDBE9C68DC372C7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value of Financial Instruments, Policy</link:label>
    <link:label id="lab_us-gaap_FairValueOfFinancialInstrumentsPolicy_46E40C78C357F481ACDBE9C68DC372C7_label_en-US" xlink:label="lab_us-gaap_FairValueOfFinancialInstrumentsPolicy_46E40C78C357F481ACDBE9C68DC372C7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value of Financial Instruments, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FairValueOfFinancialInstrumentsPolicy" xlink:label="loc_us-gaap_FairValueOfFinancialInstrumentsPolicy_46E40C78C357F481ACDBE9C68DC372C7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueOfFinancialInstrumentsPolicy_46E40C78C357F481ACDBE9C68DC372C7" xlink:to="lab_us-gaap_FairValueOfFinancialInstrumentsPolicy_46E40C78C357F481ACDBE9C68DC372C7" xlink:type="arc" />
    <link:label id="lab_pll_PresentationAndUseOfEstimatesInFinancialStatementsPolicyTextBlock_D072FB155CB1697B34CCA4DF3691D311_verboseLabel_en-US" xlink:label="lab_pll_PresentationAndUseOfEstimatesInFinancialStatementsPolicyTextBlock_D072FB155CB1697B34CCA4DF3691D311" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Presentation and Use of Estimates</link:label>
    <link:label id="lab_pll_PresentationAndUseOfEstimatesInFinancialStatementsPolicyTextBlock_D072FB155CB1697B34CCA4DF3691D311_label_en-US" xlink:label="lab_pll_PresentationAndUseOfEstimatesInFinancialStatementsPolicyTextBlock_D072FB155CB1697B34CCA4DF3691D311" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Presentation and Use Of Estimates In Financial Statements [Policy Text Block]</link:label>
    <link:label id="lab_pll_PresentationAndUseOfEstimatesInFinancialStatementsPolicyTextBlock_D072FB155CB1697B34CCA4DF3691D311_documentation_en-US" xlink:label="lab_pll_PresentationAndUseOfEstimatesInFinancialStatementsPolicyTextBlock_D072FB155CB1697B34CCA4DF3691D311" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The entire disclosure for the basis of accounting, or basis of presentation, used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS) and disclosure of accounting policy for the use of estimates in the preparation of financial statements in conformity with generally accepted accounting principles.</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_PresentationAndUseOfEstimatesInFinancialStatementsPolicyTextBlock" xlink:label="loc_pll_PresentationAndUseOfEstimatesInFinancialStatementsPolicyTextBlock_D072FB155CB1697B34CCA4DF3691D311" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_PresentationAndUseOfEstimatesInFinancialStatementsPolicyTextBlock_D072FB155CB1697B34CCA4DF3691D311" xlink:to="lab_pll_PresentationAndUseOfEstimatesInFinancialStatementsPolicyTextBlock_D072FB155CB1697B34CCA4DF3691D311" xlink:type="arc" />
    <link:label id="lab_us-gaap_ComprehensiveIncomeNoteTextBlock_1D3090DB9420C2351B0CA4DF4110500D_verboseLabel_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomeNoteTextBlock_1D3090DB9420C2351B0CA4DF4110500D" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">COMPREHENSIVE INCOME</link:label>
    <link:label id="lab_us-gaap_ComprehensiveIncomeNoteTextBlock_1D3090DB9420C2351B0CA4DF4110500D_label_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomeNoteTextBlock_1D3090DB9420C2351B0CA4DF4110500D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Comprehensive Income (Loss) Note [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ComprehensiveIncomeNoteTextBlock" xlink:label="loc_us-gaap_ComprehensiveIncomeNoteTextBlock_1D3090DB9420C2351B0CA4DF4110500D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ComprehensiveIncomeNoteTextBlock_1D3090DB9420C2351B0CA4DF4110500D" xlink:to="lab_us-gaap_ComprehensiveIncomeNoteTextBlock_1D3090DB9420C2351B0CA4DF4110500D" xlink:type="arc" />
    <link:label id="lab_us-gaap_GeneralNetInvestmentHedgeInformationAbstract_7F07400E57C2EF5E106BA4DF40A9A43A_verboseLabel_en-US" xlink:label="lab_us-gaap_GeneralNetInvestmentHedgeInformationAbstract_7F07400E57C2EF5E106BA4DF40A9A43A" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Nonderivatives designated as hedging relationships</link:label>
    <link:label id="lab_us-gaap_GeneralNetInvestmentHedgeInformationAbstract_7F07400E57C2EF5E106BA4DF40A9A43A_label_en-US" xlink:label="lab_us-gaap_GeneralNetInvestmentHedgeInformationAbstract_7F07400E57C2EF5E106BA4DF40A9A43A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">General Net Investment Hedge Information [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_GeneralNetInvestmentHedgeInformationAbstract" xlink:label="loc_us-gaap_GeneralNetInvestmentHedgeInformationAbstract_7F07400E57C2EF5E106BA4DF40A9A43A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GeneralNetInvestmentHedgeInformationAbstract_7F07400E57C2EF5E106BA4DF40A9A43A" xlink:to="lab_us-gaap_GeneralNetInvestmentHedgeInformationAbstract_7F07400E57C2EF5E106BA4DF40A9A43A" xlink:type="arc" />
    <link:label id="lab_us-gaap_TranslationAdjustmentForNetInvestmentHedgeIncreaseDecreaseNetOfTax_713CDE81501B7D3AC7CFA4DF40A99313_verboseLabel_en-US" xlink:label="lab_us-gaap_TranslationAdjustmentForNetInvestmentHedgeIncreaseDecreaseNetOfTax_713CDE81501B7D3AC7CFA4DF40A99313" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Net investment hedge</link:label>
    <link:label id="lab_us-gaap_TranslationAdjustmentForNetInvestmentHedgeIncreaseDecreaseNetOfTax_713CDE81501B7D3AC7CFA4DF40A99313_label_en-US" xlink:label="lab_us-gaap_TranslationAdjustmentForNetInvestmentHedgeIncreaseDecreaseNetOfTax_713CDE81501B7D3AC7CFA4DF40A99313" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gain (Loss) on Derivative Used in Net Investment Hedge, Net of Tax</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_TranslationAdjustmentForNetInvestmentHedgeIncreaseDecreaseNetOfTax" xlink:label="loc_us-gaap_TranslationAdjustmentForNetInvestmentHedgeIncreaseDecreaseNetOfTax_713CDE81501B7D3AC7CFA4DF40A99313" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TranslationAdjustmentForNetInvestmentHedgeIncreaseDecreaseNetOfTax_713CDE81501B7D3AC7CFA4DF40A99313" xlink:to="lab_us-gaap_TranslationAdjustmentForNetInvestmentHedgeIncreaseDecreaseNetOfTax_713CDE81501B7D3AC7CFA4DF40A99313" xlink:type="arc" />
    <link:label id="lab_us-gaap_AmountOfIneffectivenessOnNetInvestmentHedges_C6D2E649745E17827A33A4DF40A94B36_verboseLabel_en-US" xlink:label="lab_us-gaap_AmountOfIneffectivenessOnNetInvestmentHedges_C6D2E649745E17827A33A4DF40A94B36" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Net investment hedge</link:label>
    <link:label id="lab_us-gaap_AmountOfIneffectivenessOnNetInvestmentHedges_C6D2E649745E17827A33A4DF40A94B36_label_en-US" xlink:label="lab_us-gaap_AmountOfIneffectivenessOnNetInvestmentHedges_C6D2E649745E17827A33A4DF40A94B36" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amount of Ineffectiveness on Net Investment Hedges</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AmountOfIneffectivenessOnNetInvestmentHedges" xlink:label="loc_us-gaap_AmountOfIneffectivenessOnNetInvestmentHedges_C6D2E649745E17827A33A4DF40A94B36" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AmountOfIneffectivenessOnNetInvestmentHedges_C6D2E649745E17827A33A4DF40A94B36" xlink:to="lab_us-gaap_AmountOfIneffectivenessOnNetInvestmentHedges_C6D2E649745E17827A33A4DF40A94B36" xlink:type="arc" />
    <link:label id="lab_us-gaap_SubsequentEventsAbstract_F327A0ED976B84F2B5439C9C7C5D3A2A_label_en-US" xlink:label="lab_us-gaap_SubsequentEventsAbstract_F327A0ED976B84F2B5439C9C7C5D3A2A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Subsequent Events [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SubsequentEventsAbstract" xlink:label="loc_us-gaap_SubsequentEventsAbstract_F327A0ED976B84F2B5439C9C7C5D3A2A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsequentEventsAbstract_F327A0ED976B84F2B5439C9C7C5D3A2A" xlink:to="lab_us-gaap_SubsequentEventsAbstract_F327A0ED976B84F2B5439C9C7C5D3A2A" xlink:type="arc" />
    <link:label id="lab_us-gaap_SubsequentEventsTextBlock_95BA7D8148674322B050A06E31CC1884_terseLabel_en-US" xlink:label="lab_us-gaap_SubsequentEventsTextBlock_95BA7D8148674322B050A06E31CC1884" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Subsequent Events [Text Block]</link:label>
    <link:label id="lab_us-gaap_SubsequentEventsTextBlock_95BA7D8148674322B050A06E31CC1884_label_en-US" xlink:label="lab_us-gaap_SubsequentEventsTextBlock_95BA7D8148674322B050A06E31CC1884" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Subsequent Events [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SubsequentEventsTextBlock" xlink:label="loc_us-gaap_SubsequentEventsTextBlock_95BA7D8148674322B050A06E31CC1884" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsequentEventsTextBlock_95BA7D8148674322B050A06E31CC1884" xlink:to="lab_us-gaap_SubsequentEventsTextBlock_95BA7D8148674322B050A06E31CC1884" xlink:type="arc" />
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesGrossRealizedGainsLossesSaleProceeds_5640E0D393689FD91C78A4DF3F7EE33C_verboseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesGrossRealizedGainsLossesSaleProceeds_5640E0D393689FD91C78A4DF3F7EE33C" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from sales</link:label>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesGrossRealizedGainsLossesSaleProceeds_5640E0D393689FD91C78A4DF3F7EE33C_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesGrossRealizedGainsLossesSaleProceeds_5640E0D393689FD91C78A4DF3F7EE33C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesGrossRealizedGainsLossesSaleProceeds" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesGrossRealizedGainsLossesSaleProceeds_5640E0D393689FD91C78A4DF3F7EE33C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesGrossRealizedGainsLossesSaleProceeds_5640E0D393689FD91C78A4DF3F7EE33C" xlink:to="lab_us-gaap_AvailableForSaleSecuritiesGrossRealizedGainsLossesSaleProceeds_5640E0D393689FD91C78A4DF3F7EE33C" xlink:type="arc" />
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesGrossRealizedGains_0BED9CF63546E9C86D2EA4DF3F7E4DF5_verboseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesGrossRealizedGains_0BED9CF63546E9C86D2EA4DF3F7E4DF5" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Realized gross gains on sales</link:label>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesGrossRealizedGains_0BED9CF63546E9C86D2EA4DF3F7E4DF5_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesGrossRealizedGains_0BED9CF63546E9C86D2EA4DF3F7E4DF5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Available-for-sale Securities, Gross Realized Gains</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesGrossRealizedGains" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesGrossRealizedGains_0BED9CF63546E9C86D2EA4DF3F7E4DF5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesGrossRealizedGains_0BED9CF63546E9C86D2EA4DF3F7E4DF5" xlink:to="lab_us-gaap_AvailableForSaleSecuritiesGrossRealizedGains_0BED9CF63546E9C86D2EA4DF3F7E4DF5" xlink:type="arc" />
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses_ACFCEBC1407941F2B4BBA4DF3F7E3E55_verboseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses_ACFCEBC1407941F2B4BBA4DF3F7E3E55" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Realized gross losses on sales</link:label>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses_ACFCEBC1407941F2B4BBA4DF3F7E3E55_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses_ACFCEBC1407941F2B4BBA4DF3F7E3E55" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Available-for-sale Securities, Gross Realized Losses</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses_ACFCEBC1407941F2B4BBA4DF3F7E3E55" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses_ACFCEBC1407941F2B4BBA4DF3F7E3E55" xlink:to="lab_us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses_ACFCEBC1407941F2B4BBA4DF3F7E3E55" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_D6FEE00AF32C9D0CB8DAA4DF422ACD4A_verboseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_D6FEE00AF32C9D0CB8DAA4DF422ACD4A" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Segment Information</link:label>
    <link:label id="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_D6FEE00AF32C9D0CB8DAA4DF422ACD4A_label_en-US" xlink:label="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_D6FEE00AF32C9D0CB8DAA4DF422ACD4A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Segment Reporting Information, by Segment [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_D6FEE00AF32C9D0CB8DAA4DF422ACD4A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_D6FEE00AF32C9D0CB8DAA4DF422ACD4A" xlink:to="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_D6FEE00AF32C9D0CB8DAA4DF422ACD4A" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_6C968F47E76A5D49D284E9724E4CB206_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_6C968F47E76A5D49D284E9724E4CB206" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Accounts, Notes, Loans and Financing Receivable [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_6C968F47E76A5D49D284E9724E4CB206_label_en-US" xlink:label="lab_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_6C968F47E76A5D49D284E9724E4CB206" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Accounts, Notes, Loans and Financing Receivable [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_6C968F47E76A5D49D284E9724E4CB206" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_6C968F47E76A5D49D284E9724E4CB206" xlink:to="lab_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_6C968F47E76A5D49D284E9724E4CB206" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis_373AFE7C50D4D55604B4E970660F2AC5_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis_373AFE7C50D4D55604B4E970660F2AC5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accounts, Notes, Loans and Financing Receivable by Billing Status, Type [Axis]</link:label>
    <link:label id="lab_us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis_373AFE7C50D4D55604B4E970660F2AC5_label_en-US" xlink:label="lab_us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis_373AFE7C50D4D55604B4E970660F2AC5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounts, Notes, Loans and Financing Receivable by Billing Status, Type [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis" xlink:label="loc_us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis_373AFE7C50D4D55604B4E970660F2AC5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis_373AFE7C50D4D55604B4E970660F2AC5" xlink:to="lab_us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis_373AFE7C50D4D55604B4E970660F2AC5" xlink:type="arc" />
    <link:label id="lab_us-gaap_ReceivablesBillingStatusDomain_E77624FABE828C12C34FE97067543952_terseLabel_en-US" xlink:label="lab_us-gaap_ReceivablesBillingStatusDomain_E77624FABE828C12C34FE97067543952" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Receivables Billing Status [Domain]</link:label>
    <link:label id="lab_us-gaap_ReceivablesBillingStatusDomain_E77624FABE828C12C34FE97067543952_label_en-US" xlink:label="lab_us-gaap_ReceivablesBillingStatusDomain_E77624FABE828C12C34FE97067543952" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Receivables Billing Status [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ReceivablesBillingStatusDomain" xlink:label="loc_us-gaap_ReceivablesBillingStatusDomain_E77624FABE828C12C34FE97067543952" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ReceivablesBillingStatusDomain_E77624FABE828C12C34FE97067543952" xlink:to="lab_us-gaap_ReceivablesBillingStatusDomain_E77624FABE828C12C34FE97067543952" xlink:type="arc" />
    <link:label id="lab_us-gaap_BilledRevenuesMember_04AF1A3B121F67161917E970F120C6EA_terseLabel_en-US" xlink:label="lab_us-gaap_BilledRevenuesMember_04AF1A3B121F67161917E970F120C6EA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Billed Revenues [Member]</link:label>
    <link:label id="lab_us-gaap_BilledRevenuesMember_04AF1A3B121F67161917E970F120C6EA_label_en-US" xlink:label="lab_us-gaap_BilledRevenuesMember_04AF1A3B121F67161917E970F120C6EA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Billed Revenues [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_BilledRevenuesMember" xlink:label="loc_us-gaap_BilledRevenuesMember_04AF1A3B121F67161917E970F120C6EA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BilledRevenuesMember_04AF1A3B121F67161917E970F120C6EA" xlink:to="lab_us-gaap_BilledRevenuesMember_04AF1A3B121F67161917E970F120C6EA" xlink:type="arc" />
    <link:label id="lab_pll_UnbilledMember_368C35B4D6DA8333B621E971B66F1D00_terseLabel_en-US" xlink:label="lab_pll_UnbilledMember_368C35B4D6DA8333B621E971B66F1D00" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unbilled [Member]</link:label>
    <link:label id="lab_pll_UnbilledMember_368C35B4D6DA8333B621E971B66F1D00_label_en-US" xlink:label="lab_pll_UnbilledMember_368C35B4D6DA8333B621E971B66F1D00" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unbilled [Member]</link:label>
    <link:label id="lab_pll_UnbilledMember_368C35B4D6DA8333B621E971B66F1D00_documentation_en-US" xlink:label="lab_pll_UnbilledMember_368C35B4D6DA8333B621E971B66F1D00" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Unbilled amounts due for services rendered or products shipped.</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_UnbilledMember" xlink:label="loc_pll_UnbilledMember_368C35B4D6DA8333B621E971B66F1D00" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_UnbilledMember_368C35B4D6DA8333B621E971B66F1D00" xlink:to="lab_pll_UnbilledMember_368C35B4D6DA8333B621E971B66F1D00" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccountsNotesAndLoansReceivableLineItems_2FA643C4457121680B82E972E6C880E1_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsNotesAndLoansReceivableLineItems_2FA643C4457121680B82E972E6C880E1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accounts, Notes, Loans and Financing Receivable [Line Items]</link:label>
    <link:label id="lab_us-gaap_AccountsNotesAndLoansReceivableLineItems_2FA643C4457121680B82E972E6C880E1_label_en-US" xlink:label="lab_us-gaap_AccountsNotesAndLoansReceivableLineItems_2FA643C4457121680B82E972E6C880E1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounts, Notes, Loans and Financing Receivable [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_2FA643C4457121680B82E972E6C880E1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_2FA643C4457121680B82E972E6C880E1" xlink:to="lab_us-gaap_AccountsNotesAndLoansReceivableLineItems_2FA643C4457121680B82E972E6C880E1" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccountsReceivableGrossCurrent_874041961C04713B92793FCB1354AD49_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsReceivableGrossCurrent_874041961C04713B92793FCB1354AD49" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label id="lab_us-gaap_AccountsReceivableGrossCurrent_874041961C04713B92793FCB1354AD49_label_en-US" xlink:label="lab_us-gaap_AccountsReceivableGrossCurrent_874041961C04713B92793FCB1354AD49" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounts Receivable, Gross, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccountsReceivableGrossCurrent" xlink:label="loc_us-gaap_AccountsReceivableGrossCurrent_874041961C04713B92793FCB1354AD49" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsReceivableGrossCurrent_874041961C04713B92793FCB1354AD49" xlink:to="lab_us-gaap_AccountsReceivableGrossCurrent_874041961C04713B92793FCB1354AD49" xlink:type="arc" />
    <link:label id="lab_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_4F846F3AC501560503CD3FCB84D077F3_negatedLabel_en-US" xlink:label="lab_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_4F846F3AC501560503CD3FCB84D077F3" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Less: Allowance for doubtful accounts</link:label>
    <link:label id="lab_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_4F846F3AC501560503CD3FCB84D077F3_label_en-US" xlink:label="lab_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_4F846F3AC501560503CD3FCB84D077F3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Allowance for Doubtful Accounts Receivable, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_4F846F3AC501560503CD3FCB84D077F3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_4F846F3AC501560503CD3FCB84D077F3" xlink:to="lab_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_4F846F3AC501560503CD3FCB84D077F3" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccountsReceivableNetCurrent_173F9046EC97249C6F403FCBB8BDF503_totalLabel_en-US" xlink:label="lab_us-gaap_AccountsReceivableNetCurrent_173F9046EC97249C6F403FCBB8BDF503" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Accounts receivable</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_173F9046EC97249C6F403FCBB8BDF503" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsReceivableNetCurrent_173F9046EC97249C6F403FCBB8BDF503" xlink:to="lab_us-gaap_AccountsReceivableNetCurrent_173F9046EC97249C6F403FCBB8BDF503" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementOfCashFlowsAbstract_319184394A3E3617555BA4DF361DE937_label_en-US" xlink:label="lab_us-gaap_StatementOfCashFlowsAbstract_319184394A3E3617555BA4DF361DE937" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of Cash Flows [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:label="loc_us-gaap_StatementOfCashFlowsAbstract_319184394A3E3617555BA4DF361DE937" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_319184394A3E3617555BA4DF361DE937" xlink:to="lab_us-gaap_StatementOfCashFlowsAbstract_319184394A3E3617555BA4DF361DE937" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_EB4DB9DFC3C659B6105AA4DF361E5102_verboseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_EB4DB9DFC3C659B6105AA4DF361E5102" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Operating activities:</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_EB4DB9DFC3C659B6105AA4DF361E5102_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_EB4DB9DFC3C659B6105AA4DF361E5102" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Operating Activities [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_EB4DB9DFC3C659B6105AA4DF361E5102" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_EB4DB9DFC3C659B6105AA4DF361E5102" xlink:to="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_EB4DB9DFC3C659B6105AA4DF361E5102" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_843309D9394FAE551D67A4DF361E45A1_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_843309D9394FAE551D67A4DF361E45A1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net cash provided by operating activities</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_843309D9394FAE551D67A4DF361E45A1_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_843309D9394FAE551D67A4DF361E45A1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Operating Activities, Continuing Operations</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_843309D9394FAE551D67A4DF361E45A1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_843309D9394FAE551D67A4DF361E45A1" xlink:to="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_843309D9394FAE551D67A4DF361E45A1" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_F9AE5512AA5C0C8B430BA4DF361E6DEC_verboseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_F9AE5512AA5C0C8B430BA4DF361E6DEC" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Investing activities:</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_F9AE5512AA5C0C8B430BA4DF361E6DEC_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_F9AE5512AA5C0C8B430BA4DF361E6DEC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Investing Activities [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_F9AE5512AA5C0C8B430BA4DF361E6DEC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_F9AE5512AA5C0C8B430BA4DF361E6DEC" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_F9AE5512AA5C0C8B430BA4DF361E6DEC" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_F98B54B409350035C448A4DF361ED60E_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_F98B54B409350035C448A4DF361ED60E" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Capital expenditures</link:label>
    <link:label id="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_F98B54B409350035C448A4DF361ED60E_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_F98B54B409350035C448A4DF361ED60E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments to Acquire Property, Plant, and Equipment</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_F98B54B409350035C448A4DF361ED60E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_F98B54B409350035C448A4DF361ED60E" xlink:to="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_F98B54B409350035C448A4DF361ED60E" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_3461DDBCF1814E08E977A4DF361E883C_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_3461DDBCF1814E08E977A4DF361E883C" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Acquisition of business</link:label>
    <link:label id="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_3461DDBCF1814E08E977A4DF361E883C_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_3461DDBCF1814E08E977A4DF361E883C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments to Acquire Businesses, Net of Cash Acquired</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_3461DDBCF1814E08E977A4DF361E883C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_3461DDBCF1814E08E977A4DF361E883C" xlink:to="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_3461DDBCF1814E08E977A4DF361E883C" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsToAcquireRestrictedInvestments_A2AEE8A97C194C33CF55A4DF361EF9FB_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireRestrictedInvestments_A2AEE8A97C194C33CF55A4DF361EF9FB" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Purchases of retirement benefit assets</link:label>
    <link:label id="lab_us-gaap_PaymentsToAcquireRestrictedInvestments_A2AEE8A97C194C33CF55A4DF361EF9FB_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireRestrictedInvestments_A2AEE8A97C194C33CF55A4DF361EF9FB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments to Acquire Restricted Investments</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsToAcquireRestrictedInvestments" xlink:label="loc_us-gaap_PaymentsToAcquireRestrictedInvestments_A2AEE8A97C194C33CF55A4DF361EF9FB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToAcquireRestrictedInvestments_A2AEE8A97C194C33CF55A4DF361EF9FB" xlink:to="lab_us-gaap_PaymentsToAcquireRestrictedInvestments_A2AEE8A97C194C33CF55A4DF361EF9FB" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProceedsFromSaleOfRestrictedInvestments_A84FD90648FEB2C87772A4DF361EAE0F_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfRestrictedInvestments_A84FD90648FEB2C87772A4DF361EAE0F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from sale of retirement benefit assets</link:label>
    <link:label id="lab_us-gaap_ProceedsFromSaleOfRestrictedInvestments_A84FD90648FEB2C87772A4DF361EAE0F_label_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfRestrictedInvestments_A84FD90648FEB2C87772A4DF361EAE0F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Sale of Restricted Investments</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromSaleOfRestrictedInvestments" xlink:label="loc_us-gaap_ProceedsFromSaleOfRestrictedInvestments_A84FD90648FEB2C87772A4DF361EAE0F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromSaleOfRestrictedInvestments_A84FD90648FEB2C87772A4DF361EAE0F" xlink:to="lab_us-gaap_ProceedsFromSaleOfRestrictedInvestments_A84FD90648FEB2C87772A4DF361EAE0F" xlink:type="arc" />
    <link:label id="lab_pll_ProceedsFromSaleOfNonstrategicAssetGroupOtherInvestmentsAndPropertyPlantAndEquipment_C655DBE14CAA4EED550EA4DF361E9CFC_terseLabel_en-US" xlink:label="lab_pll_ProceedsFromSaleOfNonstrategicAssetGroupOtherInvestmentsAndPropertyPlantAndEquipment_C655DBE14CAA4EED550EA4DF361E9CFC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from sale of assets</link:label>
    <link:label id="lab_pll_ProceedsFromSaleOfNonstrategicAssetGroupOtherInvestmentsAndPropertyPlantAndEquipment_C655DBE14CAA4EED550EA4DF361E9CFC_label_en-US" xlink:label="lab_pll_ProceedsFromSaleOfNonstrategicAssetGroupOtherInvestmentsAndPropertyPlantAndEquipment_C655DBE14CAA4EED550EA4DF361E9CFC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds From Sale Of Nonstrategic Asset Group, Other Investments And Property Plant And Equipment</link:label>
    <link:label id="lab_pll_ProceedsFromSaleOfNonstrategicAssetGroupOtherInvestmentsAndPropertyPlantAndEquipment_C655DBE14CAA4EED550EA4DF361E9CFC_documentation_en-US" xlink:label="lab_pll_ProceedsFromSaleOfNonstrategicAssetGroupOtherInvestmentsAndPropertyPlantAndEquipment_C655DBE14CAA4EED550EA4DF361E9CFC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Proceeds From Sale Of Nonstrategic Asset Group, Other Investments And Property Plant And Equipment</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_ProceedsFromSaleOfNonstrategicAssetGroupOtherInvestmentsAndPropertyPlantAndEquipment" xlink:label="loc_pll_ProceedsFromSaleOfNonstrategicAssetGroupOtherInvestmentsAndPropertyPlantAndEquipment_C655DBE14CAA4EED550EA4DF361E9CFC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_ProceedsFromSaleOfNonstrategicAssetGroupOtherInvestmentsAndPropertyPlantAndEquipment_C655DBE14CAA4EED550EA4DF361E9CFC" xlink:to="lab_pll_ProceedsFromSaleOfNonstrategicAssetGroupOtherInvestmentsAndPropertyPlantAndEquipment_C655DBE14CAA4EED550EA4DF361E9CFC" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_D1923376FA55AF86ABC0A4DF361E1D63_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_D1923376FA55AF86ABC0A4DF361E1D63" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Other</link:label>
    <link:label id="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_D1923376FA55AF86ABC0A4DF361E1D63_label_en-US" xlink:label="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_D1923376FA55AF86ABC0A4DF361E1D63" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments for (Proceeds from) Other Investing Activities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsForProceedsFromOtherInvestingActivities" xlink:label="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_D1923376FA55AF86ABC0A4DF361E1D63" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_D1923376FA55AF86ABC0A4DF361E1D63" xlink:to="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_D1923376FA55AF86ABC0A4DF361E1D63" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_38DFFF29CC47B71123B9A4DF361E0E15_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_38DFFF29CC47B71123B9A4DF361E0E15" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash used by investing activities</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_38DFFF29CC47B71123B9A4DF361E0E15_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_38DFFF29CC47B71123B9A4DF361E0E15" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Investing Activities, Continuing Operations</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_38DFFF29CC47B71123B9A4DF361E0E15" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_38DFFF29CC47B71123B9A4DF361E0E15" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_38DFFF29CC47B71123B9A4DF361E0E15" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_4E0FBABAE254F6A1C447A4DF361E23F8_verboseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_4E0FBABAE254F6A1C447A4DF361E23F8" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Financing activities:</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_4E0FBABAE254F6A1C447A4DF361E23F8_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_4E0FBABAE254F6A1C447A4DF361E23F8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Financing Activities [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_4E0FBABAE254F6A1C447A4DF361E23F8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_4E0FBABAE254F6A1C447A4DF361E23F8" xlink:to="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_4E0FBABAE254F6A1C447A4DF361E23F8" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_871E30584D73EE238757A4DF361E7C52_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_871E30584D73EE238757A4DF361E7C52" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Notes payable</link:label>
    <link:label id="lab_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_871E30584D73EE238757A4DF361E7C52_label_en-US" xlink:label="lab_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_871E30584D73EE238757A4DF361E7C52" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from (Repayments of) Short-term Debt</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromRepaymentsOfShortTermDebt" xlink:label="loc_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_871E30584D73EE238757A4DF361E7C52" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_871E30584D73EE238757A4DF361E7C52" xlink:to="lab_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_871E30584D73EE238757A4DF361E7C52" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsOfDividendsCommonStock_81D86E0E428C5CA6DD27A4DF361E5E4D_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsOfDividendsCommonStock_81D86E0E428C5CA6DD27A4DF361E5E4D" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Dividends paid</link:label>
    <link:label id="lab_us-gaap_PaymentsOfDividendsCommonStock_81D86E0E428C5CA6DD27A4DF361E5E4D_label_en-US" xlink:label="lab_us-gaap_PaymentsOfDividendsCommonStock_81D86E0E428C5CA6DD27A4DF361E5E4D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments of Dividends, Common Stock</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsOfDividendsCommonStock" xlink:label="loc_us-gaap_PaymentsOfDividendsCommonStock_81D86E0E428C5CA6DD27A4DF361E5E4D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsOfDividendsCommonStock_81D86E0E428C5CA6DD27A4DF361E5E4D" xlink:to="lab_us-gaap_PaymentsOfDividendsCommonStock_81D86E0E428C5CA6DD27A4DF361E5E4D" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_2F2500D2E29DC1879611A4DF361E68D9_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_2F2500D2E29DC1879611A4DF361E68D9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term borrowings</link:label>
    <link:label id="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_2F2500D2E29DC1879611A4DF361E68D9_label_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_2F2500D2E29DC1879611A4DF361E68D9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Issuance of Long-term Debt</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_2F2500D2E29DC1879611A4DF361E68D9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_2F2500D2E29DC1879611A4DF361E68D9" xlink:to="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_2F2500D2E29DC1879611A4DF361E68D9" xlink:type="arc" />
    <link:label id="lab_us-gaap_RepaymentsOfLongTermDebtAndCapitalSecurities_95158D12868C3D1BC280A4DF361EE033_negatedLabel_en-US" xlink:label="lab_us-gaap_RepaymentsOfLongTermDebtAndCapitalSecurities_95158D12868C3D1BC280A4DF361EE033" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Repayments of long-term debt</link:label>
    <link:label id="lab_us-gaap_RepaymentsOfLongTermDebtAndCapitalSecurities_95158D12868C3D1BC280A4DF361EE033_label_en-US" xlink:label="lab_us-gaap_RepaymentsOfLongTermDebtAndCapitalSecurities_95158D12868C3D1BC280A4DF361EE033" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_RepaymentsOfLongTermDebtAndCapitalSecurities" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebtAndCapitalSecurities_95158D12868C3D1BC280A4DF361EE033" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RepaymentsOfLongTermDebtAndCapitalSecurities_95158D12868C3D1BC280A4DF361EE033" xlink:to="lab_us-gaap_RepaymentsOfLongTermDebtAndCapitalSecurities_95158D12868C3D1BC280A4DF361EE033" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProceedsFromStockPlans_950DCF16FF95C1E21EDDA4DF361EF58B_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromStockPlans_950DCF16FF95C1E21EDDA4DF361EF58B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net proceeds from stock plans</link:label>
    <link:label id="lab_us-gaap_ProceedsFromStockPlans_950DCF16FF95C1E21EDDA4DF361EF58B_label_en-US" xlink:label="lab_us-gaap_ProceedsFromStockPlans_950DCF16FF95C1E21EDDA4DF361EF58B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Stock Plans</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromStockPlans" xlink:label="loc_us-gaap_ProceedsFromStockPlans_950DCF16FF95C1E21EDDA4DF361EF58B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromStockPlans_950DCF16FF95C1E21EDDA4DF361EF58B" xlink:to="lab_us-gaap_ProceedsFromStockPlans_950DCF16FF95C1E21EDDA4DF361EF58B" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_1A42DE893BDA85669ABCA4DF361E7970_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_1A42DE893BDA85669ABCA4DF361E7970" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Purchase of treasury stock</link:label>
    <link:label id="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_1A42DE893BDA85669ABCA4DF361E7970_label_en-US" xlink:label="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_1A42DE893BDA85669ABCA4DF361E7970" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments for Repurchase of Common Stock</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_1A42DE893BDA85669ABCA4DF361E7970" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_1A42DE893BDA85669ABCA4DF361E7970" xlink:to="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_1A42DE893BDA85669ABCA4DF361E7970" xlink:type="arc" />
    <link:label id="lab_us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities_244173DF176CBE90CA6EA4DF361E99E5_terseLabel_en-US" xlink:label="lab_us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities_244173DF176CBE90CA6EA4DF361E99E5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Excess tax benefits from stock-based compensation arrangements</link:label>
    <link:label id="lab_us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities_244173DF176CBE90CA6EA4DF361E99E5_label_en-US" xlink:label="lab_us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities_244173DF176CBE90CA6EA4DF361E99E5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Excess Tax Benefit from Share-based Compensation, Financing Activities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities" xlink:label="loc_us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities_244173DF176CBE90CA6EA4DF361E99E5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities_244173DF176CBE90CA6EA4DF361E99E5" xlink:to="lab_us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities_244173DF176CBE90CA6EA4DF361E99E5" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations_8C4A8A0C199290DB79AAA4DF361E919F_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations_8C4A8A0C199290DB79AAA4DF361E919F" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash used by financing activities</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations_8C4A8A0C199290DB79AAA4DF361E919F_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations_8C4A8A0C199290DB79AAA4DF361E919F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Financing Activities, Continuing Operations</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations_8C4A8A0C199290DB79AAA4DF361E919F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations_8C4A8A0C199290DB79AAA4DF361E919F" xlink:to="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations_8C4A8A0C199290DB79AAA4DF361E919F" xlink:type="arc" />
    <link:label id="lab_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_915F2910C3BEE6A411D7A4DF361ECA7D_totalLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_915F2910C3BEE6A411D7A4DF361ECA7D" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Cash flow for period</link:label>
    <link:label id="lab_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_915F2910C3BEE6A411D7A4DF361ECA7D_label_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_915F2910C3BEE6A411D7A4DF361ECA7D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash and Cash Equivalents, Period Increase (Decrease)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:label="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_915F2910C3BEE6A411D7A4DF361ECA7D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_915F2910C3BEE6A411D7A4DF361ECA7D" xlink:to="lab_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_915F2910C3BEE6A411D7A4DF361ECA7D" xlink:type="arc" />
    <link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_586B390F257859E8A670A4DF361EF0BD_periodStartLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_586B390F257859E8A670A4DF361EF0BD" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Cash and cash equivalents at beginning of year</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_586B390F257859E8A670A4DF361EF0BD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_586B390F257859E8A670A4DF361EF0BD" xlink:to="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_586B390F257859E8A670A4DF361EF0BD" xlink:type="arc" />
    <link:label id="lab_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_CDAD678B8399EE06A6C0A4DF361E0282_terseLabel_en-US" xlink:label="lab_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_CDAD678B8399EE06A6C0A4DF361E0282" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Effect of exchange rate changes on cash and cash equivalents</link:label>
    <link:label id="lab_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_CDAD678B8399EE06A6C0A4DF361E0282_label_en-US" xlink:label="lab_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_CDAD678B8399EE06A6C0A4DF361E0282" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Effect of Exchange Rate on Cash and Cash Equivalents</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_CDAD678B8399EE06A6C0A4DF361E0282" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_CDAD678B8399EE06A6C0A4DF361E0282" xlink:to="lab_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_CDAD678B8399EE06A6C0A4DF361E0282" xlink:type="arc" />
    <link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_608A39BCE481AC9E59D0A4DF361E2A35_periodEndLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_608A39BCE481AC9E59D0A4DF361E2A35" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Cash and cash equivalents at end of period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_608A39BCE481AC9E59D0A4DF361E2A35" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_608A39BCE481AC9E59D0A4DF361E2A35" xlink:to="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_608A39BCE481AC9E59D0A4DF361E2A35" xlink:type="arc" />
    <link:label id="lab_us-gaap_SupplementalCashFlowInformationAbstract_399762DFC1A9BBE6019FA4DF361E827B_verboseLabel_en-US" xlink:label="lab_us-gaap_SupplementalCashFlowInformationAbstract_399762DFC1A9BBE6019FA4DF361E827B" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Supplemental disclosures:</link:label>
    <link:label id="lab_us-gaap_SupplementalCashFlowInformationAbstract_399762DFC1A9BBE6019FA4DF361E827B_label_en-US" xlink:label="lab_us-gaap_SupplementalCashFlowInformationAbstract_399762DFC1A9BBE6019FA4DF361E827B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Supplemental Cash Flow Information [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SupplementalCashFlowInformationAbstract" xlink:label="loc_us-gaap_SupplementalCashFlowInformationAbstract_399762DFC1A9BBE6019FA4DF361E827B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SupplementalCashFlowInformationAbstract_399762DFC1A9BBE6019FA4DF361E827B" xlink:to="lab_us-gaap_SupplementalCashFlowInformationAbstract_399762DFC1A9BBE6019FA4DF361E827B" xlink:type="arc" />
    <link:label id="lab_us-gaap_InterestPaid_047E05BA2EC4C05C0B77A4DF361F820B_terseLabel_en-US" xlink:label="lab_us-gaap_InterestPaid_047E05BA2EC4C05C0B77A4DF361F820B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interest paid</link:label>
    <link:label id="lab_us-gaap_InterestPaid_047E05BA2EC4C05C0B77A4DF361F820B_label_en-US" xlink:label="lab_us-gaap_InterestPaid_047E05BA2EC4C05C0B77A4DF361F820B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest Paid</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestPaid" xlink:label="loc_us-gaap_InterestPaid_047E05BA2EC4C05C0B77A4DF361F820B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestPaid_047E05BA2EC4C05C0B77A4DF361F820B" xlink:to="lab_us-gaap_InterestPaid_047E05BA2EC4C05C0B77A4DF361F820B" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeTaxesPaidNet_5F55EB20160F34057996A4DF361FD965_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxesPaidNet_5F55EB20160F34057996A4DF361FD965" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income taxes paid (net of refunds)</link:label>
    <link:label id="lab_us-gaap_IncomeTaxesPaidNet_5F55EB20160F34057996A4DF361FD965_label_en-US" xlink:label="lab_us-gaap_IncomeTaxesPaidNet_5F55EB20160F34057996A4DF361FD965" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Taxes Paid, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeTaxesPaidNet" xlink:label="loc_us-gaap_IncomeTaxesPaidNet_5F55EB20160F34057996A4DF361FD965" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxesPaidNet_5F55EB20160F34057996A4DF361FD965" xlink:to="lab_us-gaap_IncomeTaxesPaidNet_5F55EB20160F34057996A4DF361FD965" xlink:type="arc" />
    <link:label id="lab_pll_DerivativeInstrumentsAndHedgingActivitiesTable_8FF852656B5B9F69F816A4DF40DC4080_verboseLabel_en-US" xlink:label="lab_pll_DerivativeInstrumentsAndHedgingActivitiesTable_8FF852656B5B9F69F816A4DF40DC4080" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Derivative instruments and hedging activities [Table]</link:label>
    <link:label id="lab_pll_DerivativeInstrumentsAndHedgingActivitiesTable_8FF852656B5B9F69F816A4DF40DC4080_label_en-US" xlink:label="lab_pll_DerivativeInstrumentsAndHedgingActivitiesTable_8FF852656B5B9F69F816A4DF40DC4080" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative instruments and hedging activities [Table]</link:label>
    <link:label id="lab_pll_DerivativeInstrumentsAndHedgingActivitiesTable_8FF852656B5B9F69F816A4DF40DC4080_documentation_en-US" xlink:label="lab_pll_DerivativeInstrumentsAndHedgingActivitiesTable_8FF852656B5B9F69F816A4DF40DC4080" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Derivative instruments and hedging activities [Table]</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_DerivativeInstrumentsAndHedgingActivitiesTable" xlink:label="loc_pll_DerivativeInstrumentsAndHedgingActivitiesTable_8FF852656B5B9F69F816A4DF40DC4080" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_DerivativeInstrumentsAndHedgingActivitiesTable_8FF852656B5B9F69F816A4DF40DC4080" xlink:to="lab_pll_DerivativeInstrumentsAndHedgingActivitiesTable_8FF852656B5B9F69F816A4DF40DC4080" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentAxis_4E6CB4A3DEE9A5337FCAA4DF40DC016B_verboseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentAxis_4E6CB4A3DEE9A5337FCAA4DF40DC016B" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument [Axis]</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentAxis_4E6CB4A3DEE9A5337FCAA4DF40DC016B_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentAxis_4E6CB4A3DEE9A5337FCAA4DF40DC016B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="loc_us-gaap_DebtInstrumentAxis_4E6CB4A3DEE9A5337FCAA4DF40DC016B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentAxis_4E6CB4A3DEE9A5337FCAA4DF40DC016B" xlink:to="lab_us-gaap_DebtInstrumentAxis_4E6CB4A3DEE9A5337FCAA4DF40DC016B" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentNameDomain_346A4E69AADEC929C042A4DF40DC846F_verboseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentNameDomain_346A4E69AADEC929C042A4DF40DC846F" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument, Name [Domain]</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentNameDomain_346A4E69AADEC929C042A4DF40DC846F_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentNameDomain_346A4E69AADEC929C042A4DF40DC846F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Name [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_346A4E69AADEC929C042A4DF40DC846F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_346A4E69AADEC929C042A4DF40DC846F" xlink:to="lab_us-gaap_DebtInstrumentNameDomain_346A4E69AADEC929C042A4DF40DC846F" xlink:type="arc" />
    <link:label id="lab_pll_JpyLoanDueFiscalYear2015Member_ABD271608968E1A8E956A4DF40DCDE1E_terseLabel_en-US" xlink:label="lab_pll_JpyLoanDueFiscalYear2015Member_ABD271608968E1A8E956A4DF40DCDE1E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Jpy Loan Due Fiscal Year 2015 [Member]</link:label>
    <link:label id="lab_pll_JpyLoanDueFiscalYear2015Member_ABD271608968E1A8E956A4DF40DCDE1E_label_en-US" xlink:label="lab_pll_JpyLoanDueFiscalYear2015Member_ABD271608968E1A8E956A4DF40DCDE1E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Jpy Loan Due Fiscal Year 2015 [Member]</link:label>
    <link:label id="lab_pll_JpyLoanDueFiscalYear2015Member_ABD271608968E1A8E956A4DF40DCDE1E_documentation_en-US" xlink:label="lab_pll_JpyLoanDueFiscalYear2015Member_ABD271608968E1A8E956A4DF40DCDE1E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Jpy Loan Due Fiscal Year 2015 [Member]</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_JpyLoanDueFiscalYear2015Member" xlink:label="loc_pll_JpyLoanDueFiscalYear2015Member_ABD271608968E1A8E956A4DF40DCDE1E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_JpyLoanDueFiscalYear2015Member_ABD271608968E1A8E956A4DF40DCDE1E" xlink:to="lab_pll_JpyLoanDueFiscalYear2015Member_ABD271608968E1A8E956A4DF40DCDE1E" xlink:type="arc" />
    <link:label id="lab_pll_DerivativeInstrumentsAndHedgingActivitiesLineItems_702E31BC60DAE6C10DB8A4DF40DCAA17_verboseLabel_en-US" xlink:label="lab_pll_DerivativeInstrumentsAndHedgingActivitiesLineItems_702E31BC60DAE6C10DB8A4DF40DCAA17" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Derivative instruments and hedging activities [Line Items]</link:label>
    <link:label id="lab_pll_DerivativeInstrumentsAndHedgingActivitiesLineItems_702E31BC60DAE6C10DB8A4DF40DCAA17_label_en-US" xlink:label="lab_pll_DerivativeInstrumentsAndHedgingActivitiesLineItems_702E31BC60DAE6C10DB8A4DF40DCAA17" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative instruments and hedging activities [Line Items]</link:label>
    <link:label id="lab_pll_DerivativeInstrumentsAndHedgingActivitiesLineItems_702E31BC60DAE6C10DB8A4DF40DCAA17_documentation_en-US" xlink:label="lab_pll_DerivativeInstrumentsAndHedgingActivitiesLineItems_702E31BC60DAE6C10DB8A4DF40DCAA17" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Derivative instruments and hedging activities [Line Items]</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_DerivativeInstrumentsAndHedgingActivitiesLineItems" xlink:label="loc_pll_DerivativeInstrumentsAndHedgingActivitiesLineItems_702E31BC60DAE6C10DB8A4DF40DCAA17" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_DerivativeInstrumentsAndHedgingActivitiesLineItems_702E31BC60DAE6C10DB8A4DF40DCAA17" xlink:to="lab_pll_DerivativeInstrumentsAndHedgingActivitiesLineItems_702E31BC60DAE6C10DB8A4DF40DCAA17" xlink:type="arc" />
    <link:label id="lab_pll_NotionalAmountOfForeignCurrencyContractsEnteredDuringPeriod_5D0B53BD4108152D5FE5A4DF40DD2C32_verboseLabel_en-US" xlink:label="lab_pll_NotionalAmountOfForeignCurrencyContractsEnteredDuringPeriod_5D0B53BD4108152D5FE5A4DF40DD2C32" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Notional amount of foreign currency forward contracts entered during the period</link:label>
    <link:label id="lab_pll_NotionalAmountOfForeignCurrencyContractsEnteredDuringPeriod_5D0B53BD4108152D5FE5A4DF40DD2C32_label_en-US" xlink:label="lab_pll_NotionalAmountOfForeignCurrencyContractsEnteredDuringPeriod_5D0B53BD4108152D5FE5A4DF40DD2C32" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Notional Amount Of Foreign Currency Contracts Entered During Period</link:label>
    <link:label id="lab_pll_NotionalAmountOfForeignCurrencyContractsEnteredDuringPeriod_5D0B53BD4108152D5FE5A4DF40DD2C32_documentation_en-US" xlink:label="lab_pll_NotionalAmountOfForeignCurrencyContractsEnteredDuringPeriod_5D0B53BD4108152D5FE5A4DF40DD2C32" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Aggregate notional amount of foreign currency contracts entered during the reporting period. Notional amount refers to the number of currency units specified in the foreign currency derivative contract.</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_NotionalAmountOfForeignCurrencyContractsEnteredDuringPeriod" xlink:label="loc_pll_NotionalAmountOfForeignCurrencyContractsEnteredDuringPeriod_5D0B53BD4108152D5FE5A4DF40DD2C32" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_NotionalAmountOfForeignCurrencyContractsEnteredDuringPeriod_5D0B53BD4108152D5FE5A4DF40DD2C32" xlink:to="lab_pll_NotionalAmountOfForeignCurrencyContractsEnteredDuringPeriod_5D0B53BD4108152D5FE5A4DF40DD2C32" xlink:type="arc" />
    <link:label id="lab_us-gaap_NotionalAmountOfForeignCurrencyDerivatives_E73CF4F450CAFCAF2F68A4DF40DD3B79_verboseLabel_en-US" xlink:label="lab_us-gaap_NotionalAmountOfForeignCurrencyDerivatives_E73CF4F450CAFCAF2F68A4DF40DD3B79" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Notional amount of foreign currency forward contracts</link:label>
    <link:label id="lab_us-gaap_NotionalAmountOfForeignCurrencyDerivatives_E73CF4F450CAFCAF2F68A4DF40DD3B79_label_en-US" xlink:label="lab_us-gaap_NotionalAmountOfForeignCurrencyDerivatives_E73CF4F450CAFCAF2F68A4DF40DD3B79" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Notional Amount of Foreign Currency Derivatives</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NotionalAmountOfForeignCurrencyDerivatives" xlink:label="loc_us-gaap_NotionalAmountOfForeignCurrencyDerivatives_E73CF4F450CAFCAF2F68A4DF40DD3B79" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NotionalAmountOfForeignCurrencyDerivatives_E73CF4F450CAFCAF2F68A4DF40DD3B79" xlink:to="lab_us-gaap_NotionalAmountOfForeignCurrencyDerivatives_E73CF4F450CAFCAF2F68A4DF40DD3B79" xlink:type="arc" />
    <link:label id="lab_us-gaap_NotionalAmountOfDerivativeInstrumentsDesignatedAsNetInvestmentHedges_D7FB6CD10319C1EE7F07C1FBFAB453DE_terseLabel_en-US" xlink:label="lab_us-gaap_NotionalAmountOfDerivativeInstrumentsDesignatedAsNetInvestmentHedges_D7FB6CD10319C1EE7F07C1FBFAB453DE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Notional amount of derivative instruments designated as net investment hedges</link:label>
    <link:label id="lab_us-gaap_NotionalAmountOfDerivativeInstrumentsDesignatedAsNetInvestmentHedges_D7FB6CD10319C1EE7F07C1FBFAB453DE_label_en-US" xlink:label="lab_us-gaap_NotionalAmountOfDerivativeInstrumentsDesignatedAsNetInvestmentHedges_D7FB6CD10319C1EE7F07C1FBFAB453DE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Notional Amount of Derivative Instruments Designated as Net Investment Hedges</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NotionalAmountOfDerivativeInstrumentsDesignatedAsNetInvestmentHedges" xlink:label="loc_us-gaap_NotionalAmountOfDerivativeInstrumentsDesignatedAsNetInvestmentHedges_D7FB6CD10319C1EE7F07C1FBFAB453DE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NotionalAmountOfDerivativeInstrumentsDesignatedAsNetInvestmentHedges_D7FB6CD10319C1EE7F07C1FBFAB453DE" xlink:to="lab_us-gaap_NotionalAmountOfDerivativeInstrumentsDesignatedAsNetInvestmentHedges_D7FB6CD10319C1EE7F07C1FBFAB453DE" xlink:type="arc" />
    <link:label id="lab_pll_InventoriesDetailsAbstract_51E1E633E8BF707C6952A4DF37B291CC_label_en-US" xlink:label="lab_pll_InventoriesDetailsAbstract_51E1E633E8BF707C6952A4DF37B291CC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventories (Details) [Abstract]</link:label>
    <link:label id="lab_pll_InventoriesDetailsAbstract_51E1E633E8BF707C6952A4DF37B291CC_documentation_en-US" xlink:label="lab_pll_InventoriesDetailsAbstract_51E1E633E8BF707C6952A4DF37B291CC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Inventories (Details).</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_InventoriesDetailsAbstract" xlink:label="loc_pll_InventoriesDetailsAbstract_51E1E633E8BF707C6952A4DF37B291CC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_InventoriesDetailsAbstract_51E1E633E8BF707C6952A4DF37B291CC" xlink:to="lab_pll_InventoriesDetailsAbstract_51E1E633E8BF707C6952A4DF37B291CC" xlink:type="arc" />
    <link:label id="lab_us-gaap_InventoryRawMaterialsAndPurchasedPartsNetOfReserves_9C592E96986F3319C783A4DF37B2E385_verboseLabel_en-US" xlink:label="lab_us-gaap_InventoryRawMaterialsAndPurchasedPartsNetOfReserves_9C592E96986F3319C783A4DF37B2E385" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Raw materials and components</link:label>
    <link:label id="lab_us-gaap_InventoryRawMaterialsAndPurchasedPartsNetOfReserves_9C592E96986F3319C783A4DF37B2E385_label_en-US" xlink:label="lab_us-gaap_InventoryRawMaterialsAndPurchasedPartsNetOfReserves_9C592E96986F3319C783A4DF37B2E385" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventory, Raw Materials and Purchased Parts, Net of Reserves</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InventoryRawMaterialsAndPurchasedPartsNetOfReserves" xlink:label="loc_us-gaap_InventoryRawMaterialsAndPurchasedPartsNetOfReserves_9C592E96986F3319C783A4DF37B2E385" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryRawMaterialsAndPurchasedPartsNetOfReserves_9C592E96986F3319C783A4DF37B2E385" xlink:to="lab_us-gaap_InventoryRawMaterialsAndPurchasedPartsNetOfReserves_9C592E96986F3319C783A4DF37B2E385" xlink:type="arc" />
    <link:label id="lab_us-gaap_InventoryWorkInProcessNetOfReserves_67CBC07328FB20BFF889A4DF37B2B969_verboseLabel_en-US" xlink:label="lab_us-gaap_InventoryWorkInProcessNetOfReserves_67CBC07328FB20BFF889A4DF37B2B969" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Work-in-process</link:label>
    <link:label id="lab_us-gaap_InventoryWorkInProcessNetOfReserves_67CBC07328FB20BFF889A4DF37B2B969_label_en-US" xlink:label="lab_us-gaap_InventoryWorkInProcessNetOfReserves_67CBC07328FB20BFF889A4DF37B2B969" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventory, Work in Process, Net of Reserves</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InventoryWorkInProcessNetOfReserves" xlink:label="loc_us-gaap_InventoryWorkInProcessNetOfReserves_67CBC07328FB20BFF889A4DF37B2B969" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryWorkInProcessNetOfReserves_67CBC07328FB20BFF889A4DF37B2B969" xlink:to="lab_us-gaap_InventoryWorkInProcessNetOfReserves_67CBC07328FB20BFF889A4DF37B2B969" xlink:type="arc" />
    <link:label id="lab_us-gaap_InventoryFinishedGoodsNetOfReserves_EF2B2AF2B949B3757DA7A4DF37B3C8C9_verboseLabel_en-US" xlink:label="lab_us-gaap_InventoryFinishedGoodsNetOfReserves_EF2B2AF2B949B3757DA7A4DF37B3C8C9" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Finished goods</link:label>
    <link:label id="lab_us-gaap_InventoryFinishedGoodsNetOfReserves_EF2B2AF2B949B3757DA7A4DF37B3C8C9_label_en-US" xlink:label="lab_us-gaap_InventoryFinishedGoodsNetOfReserves_EF2B2AF2B949B3757DA7A4DF37B3C8C9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventory, Finished Goods, Net of Reserves</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InventoryFinishedGoodsNetOfReserves" xlink:label="loc_us-gaap_InventoryFinishedGoodsNetOfReserves_EF2B2AF2B949B3757DA7A4DF37B3C8C9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryFinishedGoodsNetOfReserves_EF2B2AF2B949B3757DA7A4DF37B3C8C9" xlink:to="lab_us-gaap_InventoryFinishedGoodsNetOfReserves_EF2B2AF2B949B3757DA7A4DF37B3C8C9" xlink:type="arc" />
    <link:label id="lab_us-gaap_InventoryNet_541AA2E0AEF4F6F95606A4DF37B3234A_totalLabel_en-US" xlink:label="lab_us-gaap_InventoryNet_541AA2E0AEF4F6F95606A4DF37B3234A" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Inventories</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InventoryNet" xlink:label="loc_us-gaap_InventoryNet_541AA2E0AEF4F6F95606A4DF37B3234A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryNet_541AA2E0AEF4F6F95606A4DF37B3234A" xlink:to="lab_us-gaap_InventoryNet_541AA2E0AEF4F6F95606A4DF37B3234A" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccrualForEnvironmentalLossContingenciesDisclosureAbstract_FD4D21AA016C78BF5E7BA4DF3A040E93_label_en-US" xlink:label="lab_us-gaap_AccrualForEnvironmentalLossContingenciesDisclosureAbstract_FD4D21AA016C78BF5E7BA4DF3A040E93" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accrual for Environmental Loss Contingencies Disclosure [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccrualForEnvironmentalLossContingenciesDisclosureAbstract" xlink:label="loc_us-gaap_AccrualForEnvironmentalLossContingenciesDisclosureAbstract_FD4D21AA016C78BF5E7BA4DF3A040E93" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccrualForEnvironmentalLossContingenciesDisclosureAbstract_FD4D21AA016C78BF5E7BA4DF3A040E93" xlink:to="lab_us-gaap_AccrualForEnvironmentalLossContingenciesDisclosureAbstract_FD4D21AA016C78BF5E7BA4DF3A040E93" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccrualForEnvironmentalLossContingencies_13A95B34EA3BD358EF97A4DF3A04F8C0_verboseLabel_en-US" xlink:label="lab_us-gaap_AccrualForEnvironmentalLossContingencies_13A95B34EA3BD358EF97A4DF3A04F8C0" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Accrual for Environmental Loss Contingencies</link:label>
    <link:label id="lab_us-gaap_AccrualForEnvironmentalLossContingencies_13A95B34EA3BD358EF97A4DF3A04F8C0_label_en-US" xlink:label="lab_us-gaap_AccrualForEnvironmentalLossContingencies_13A95B34EA3BD358EF97A4DF3A04F8C0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accrual for Environmental Loss Contingencies</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccrualForEnvironmentalLossContingencies" xlink:label="loc_us-gaap_AccrualForEnvironmentalLossContingencies_13A95B34EA3BD358EF97A4DF3A04F8C0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccrualForEnvironmentalLossContingencies_13A95B34EA3BD358EF97A4DF3A04F8C0" xlink:to="lab_us-gaap_AccrualForEnvironmentalLossContingencies_13A95B34EA3BD358EF97A4DF3A04F8C0" xlink:type="arc" />
    <link:label id="lab_us-gaap_LossContingenciesTable_5B7C0ECB74908E5153B5ACE3B2A1108A_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingenciesTable_5B7C0ECB74908E5153B5ACE3B2A1108A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loss Contingencies [Table]</link:label>
    <link:label id="lab_us-gaap_LossContingenciesTable_5B7C0ECB74908E5153B5ACE3B2A1108A_label_en-US" xlink:label="lab_us-gaap_LossContingenciesTable_5B7C0ECB74908E5153B5ACE3B2A1108A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loss Contingencies [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LossContingenciesTable" xlink:label="loc_us-gaap_LossContingenciesTable_5B7C0ECB74908E5153B5ACE3B2A1108A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LossContingenciesTable_5B7C0ECB74908E5153B5ACE3B2A1108A" xlink:to="lab_us-gaap_LossContingenciesTable_5B7C0ECB74908E5153B5ACE3B2A1108A" xlink:type="arc" />
    <link:label id="lab_us-gaap_LossContingenciesByNatureOfContingencyAxis_E6F916D45BE6CF744121ACE3B2A1FF3F_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingenciesByNatureOfContingencyAxis_E6F916D45BE6CF744121ACE3B2A1FF3F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loss Contingencies by Nature of Contingency [Axis]</link:label>
    <link:label id="lab_us-gaap_LossContingenciesByNatureOfContingencyAxis_E6F916D45BE6CF744121ACE3B2A1FF3F_label_en-US" xlink:label="lab_us-gaap_LossContingenciesByNatureOfContingencyAxis_E6F916D45BE6CF744121ACE3B2A1FF3F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loss Contingencies by Nature of Contingency [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LossContingenciesByNatureOfContingencyAxis" xlink:label="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_E6F916D45BE6CF744121ACE3B2A1FF3F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_E6F916D45BE6CF744121ACE3B2A1FF3F" xlink:to="lab_us-gaap_LossContingenciesByNatureOfContingencyAxis_E6F916D45BE6CF744121ACE3B2A1FF3F" xlink:type="arc" />
    <link:label id="lab_us-gaap_LossContingencyNatureDomain_619A57DF5A176FAD79C2ACE3B2A10524_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingencyNatureDomain_619A57DF5A176FAD79C2ACE3B2A10524" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loss Contingency, Nature [Domain]</link:label>
    <link:label id="lab_us-gaap_LossContingencyNatureDomain_619A57DF5A176FAD79C2ACE3B2A10524_label_en-US" xlink:label="lab_us-gaap_LossContingencyNatureDomain_619A57DF5A176FAD79C2ACE3B2A10524" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loss Contingency, Nature [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LossContingencyNatureDomain" xlink:label="loc_us-gaap_LossContingencyNatureDomain_619A57DF5A176FAD79C2ACE3B2A10524" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LossContingencyNatureDomain_619A57DF5A176FAD79C2ACE3B2A10524" xlink:to="lab_us-gaap_LossContingencyNatureDomain_619A57DF5A176FAD79C2ACE3B2A10524" xlink:type="arc" />
    <link:label id="lab_pll_ClassActionLawsuitMember_F4D619747CC3CA740464ACE585D32EEE_terseLabel_en-US" xlink:label="lab_pll_ClassActionLawsuitMember_F4D619747CC3CA740464ACE585D32EEE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Class Action Lawsuit [Member]</link:label>
    <link:label id="lab_pll_ClassActionLawsuitMember_F4D619747CC3CA740464ACE585D32EEE_label_en-US" xlink:label="lab_pll_ClassActionLawsuitMember_F4D619747CC3CA740464ACE585D32EEE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Class Action Lawsuit [Member]</link:label>
    <link:label id="lab_pll_ClassActionLawsuitMember_F4D619747CC3CA740464ACE585D32EEE_documentation_en-US" xlink:label="lab_pll_ClassActionLawsuitMember_F4D619747CC3CA740464ACE585D32EEE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Class Action Lawsuit [Member]</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_ClassActionLawsuitMember" xlink:label="loc_pll_ClassActionLawsuitMember_F4D619747CC3CA740464ACE585D32EEE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_ClassActionLawsuitMember_F4D619747CC3CA740464ACE585D32EEE" xlink:to="lab_pll_ClassActionLawsuitMember_F4D619747CC3CA740464ACE585D32EEE" xlink:type="arc" />
    <link:label id="lab_us-gaap_LossContingenciesLineItems_B10DB453ACCE99FE3B57ACE3B2C1DF10_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingenciesLineItems_B10DB453ACCE99FE3B57ACE3B2C1DF10" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loss Contingencies [Line Items]</link:label>
    <link:label id="lab_us-gaap_LossContingenciesLineItems_B10DB453ACCE99FE3B57ACE3B2C1DF10_label_en-US" xlink:label="lab_us-gaap_LossContingenciesLineItems_B10DB453ACCE99FE3B57ACE3B2C1DF10" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loss Contingencies [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="loc_us-gaap_LossContingenciesLineItems_B10DB453ACCE99FE3B57ACE3B2C1DF10" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LossContingenciesLineItems_B10DB453ACCE99FE3B57ACE3B2C1DF10" xlink:to="lab_us-gaap_LossContingenciesLineItems_B10DB453ACCE99FE3B57ACE3B2C1DF10" xlink:type="arc" />
    <link:label id="lab_us-gaap_LossContingencyAccrualAtCarryingValue_FCB639DF03FBDF44CA94ACE421C10AB9_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingencyAccrualAtCarryingValue_FCB639DF03FBDF44CA94ACE421C10AB9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loss Contingency Accrual, at Carrying Value</link:label>
    <link:label id="lab_us-gaap_LossContingencyAccrualAtCarryingValue_FCB639DF03FBDF44CA94ACE421C10AB9_label_en-US" xlink:label="lab_us-gaap_LossContingencyAccrualAtCarryingValue_FCB639DF03FBDF44CA94ACE421C10AB9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loss Contingency Accrual, at Carrying Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LossContingencyAccrualAtCarryingValue" xlink:label="loc_us-gaap_LossContingencyAccrualAtCarryingValue_FCB639DF03FBDF44CA94ACE421C10AB9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LossContingencyAccrualAtCarryingValue_FCB639DF03FBDF44CA94ACE421C10AB9" xlink:to="lab_us-gaap_LossContingencyAccrualAtCarryingValue_FCB639DF03FBDF44CA94ACE421C10AB9" xlink:type="arc" />
    <link:label id="lab_us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_7006C3A49E6AB410913CA4DF3B98E6C0_verboseLabel_en-US" xlink:label="lab_us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_7006C3A49E6AB410913CA4DF3B98E6C0" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">COMPONENTS OF NET PERIODIC PENSION COST</link:label>
    <link:label id="lab_us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_7006C3A49E6AB410913CA4DF3B98E6C0_label_en-US" xlink:label="lab_us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_7006C3A49E6AB410913CA4DF3B98E6C0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pension and Other Postretirement Benefits Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock" xlink:label="loc_us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_7006C3A49E6AB410913CA4DF3B98E6C0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_7006C3A49E6AB410913CA4DF3B98E6C0" xlink:to="lab_us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_7006C3A49E6AB410913CA4DF3B98E6C0" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfNetBenefitCostsTableTextBlock_245B1A4F4AAB57BBFF51A4DF3BC8775A_verboseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfNetBenefitCostsTableTextBlock_245B1A4F4AAB57BBFF51A4DF3BC8775A" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Net periodic benefit cost for the Company's defined benefit pension plans</link:label>
    <link:label id="lab_us-gaap_ScheduleOfNetBenefitCostsTableTextBlock_245B1A4F4AAB57BBFF51A4DF3BC8775A_label_en-US" xlink:label="lab_us-gaap_ScheduleOfNetBenefitCostsTableTextBlock_245B1A4F4AAB57BBFF51A4DF3BC8775A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Net Benefit Costs [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfNetBenefitCostsTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfNetBenefitCostsTableTextBlock_245B1A4F4AAB57BBFF51A4DF3BC8775A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfNetBenefitCostsTableTextBlock_245B1A4F4AAB57BBFF51A4DF3BC8775A" xlink:to="lab_us-gaap_ScheduleOfNetBenefitCostsTableTextBlock_245B1A4F4AAB57BBFF51A4DF3BC8775A" xlink:type="arc" />
    <link:label id="lab_us-gaap_FairValueDisclosuresAbstract_23D45B7FC743688DD4E9A4DF3E721F15_label_en-US" xlink:label="lab_us-gaap_FairValueDisclosuresAbstract_23D45B7FC743688DD4E9A4DF3E721F15" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value Disclosures [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FairValueDisclosuresAbstract" xlink:label="loc_us-gaap_FairValueDisclosuresAbstract_23D45B7FC743688DD4E9A4DF3E721F15" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueDisclosuresAbstract_23D45B7FC743688DD4E9A4DF3E721F15" xlink:to="lab_us-gaap_FairValueDisclosuresAbstract_23D45B7FC743688DD4E9A4DF3E721F15" xlink:type="arc" />
    <link:label id="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_E9CF2F3408B12B3B04E3A4DF3E72F079_verboseLabel_en-US" xlink:label="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_E9CF2F3408B12B3B04E3A4DF3E72F079" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Table]</link:label>
    <link:label id="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_E9CF2F3408B12B3B04E3A4DF3E72F079_label_en-US" xlink:label="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_E9CF2F3408B12B3B04E3A4DF3E72F079" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_E9CF2F3408B12B3B04E3A4DF3E72F079" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_E9CF2F3408B12B3B04E3A4DF3E72F079" xlink:to="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_E9CF2F3408B12B3B04E3A4DF3E72F079" xlink:type="arc" />
    <link:label id="lab_us-gaap_FairValueByFairValueHierarchyLevelAxis_D6070332521A05D268D4A4DF3E72C783_verboseLabel_en-US" xlink:label="lab_us-gaap_FairValueByFairValueHierarchyLevelAxis_D6070332521A05D268D4A4DF3E72C783" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Fair Value, Hierarchy [Axis]</link:label>
    <link:label id="lab_us-gaap_FairValueByFairValueHierarchyLevelAxis_D6070332521A05D268D4A4DF3E72C783_label_en-US" xlink:label="lab_us-gaap_FairValueByFairValueHierarchyLevelAxis_D6070332521A05D268D4A4DF3E72C783" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Hierarchy [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_D6070332521A05D268D4A4DF3E72C783" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_D6070332521A05D268D4A4DF3E72C783" xlink:to="lab_us-gaap_FairValueByFairValueHierarchyLevelAxis_D6070332521A05D268D4A4DF3E72C783" xlink:type="arc" />
    <link:label id="lab_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_B68F584DA88BF2E0F38CC6870E2696EF_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_B68F584DA88BF2E0F38CC6870E2696EF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value, Measurements, Fair Value Hierarchy [Domain]</link:label>
    <link:label id="lab_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_B68F584DA88BF2E0F38CC6870E2696EF_label_en-US" xlink:label="lab_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_B68F584DA88BF2E0F38CC6870E2696EF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Measurements, Fair Value Hierarchy [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_B68F584DA88BF2E0F38CC6870E2696EF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_B68F584DA88BF2E0F38CC6870E2696EF" xlink:to="lab_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_B68F584DA88BF2E0F38CC6870E2696EF" xlink:type="arc" />
    <link:label id="lab_us-gaap_FairValueInputsLevel1Member_28C56AED26FA33787E8AA4DF3E72B6D1_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel1Member_28C56AED26FA33787E8AA4DF3E72B6D1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value, Inputs, Level 1 [Member]</link:label>
    <link:label id="lab_us-gaap_FairValueInputsLevel1Member_28C56AED26FA33787E8AA4DF3E72B6D1_label_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel1Member_28C56AED26FA33787E8AA4DF3E72B6D1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Inputs, Level 1 [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_28C56AED26FA33787E8AA4DF3E72B6D1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueInputsLevel1Member_28C56AED26FA33787E8AA4DF3E72B6D1" xlink:to="lab_us-gaap_FairValueInputsLevel1Member_28C56AED26FA33787E8AA4DF3E72B6D1" xlink:type="arc" />
    <link:label id="lab_us-gaap_FairValueInputsLevel2Member_279EB4CCF2283E86B987A4DF3E72BDA1_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel2Member_279EB4CCF2283E86B987A4DF3E72BDA1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value, Inputs, Level 2 [Member]</link:label>
    <link:label id="lab_us-gaap_FairValueInputsLevel2Member_279EB4CCF2283E86B987A4DF3E72BDA1_label_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel2Member_279EB4CCF2283E86B987A4DF3E72BDA1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Inputs, Level 2 [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_279EB4CCF2283E86B987A4DF3E72BDA1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueInputsLevel2Member_279EB4CCF2283E86B987A4DF3E72BDA1" xlink:to="lab_us-gaap_FairValueInputsLevel2Member_279EB4CCF2283E86B987A4DF3E72BDA1" xlink:type="arc" />
    <link:label id="lab_us-gaap_FairValueInputsLevel3Member_B8663B002824E2C02A57A4DF3E72A45E_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel3Member_B8663B002824E2C02A57A4DF3E72A45E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value, Inputs, Level 3 [Member]</link:label>
    <link:label id="lab_us-gaap_FairValueInputsLevel3Member_B8663B002824E2C02A57A4DF3E72A45E_label_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel3Member_B8663B002824E2C02A57A4DF3E72A45E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Inputs, Level 3 [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_B8663B002824E2C02A57A4DF3E72A45E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueInputsLevel3Member_B8663B002824E2C02A57A4DF3E72A45E" xlink:to="lab_us-gaap_FairValueInputsLevel3Member_B8663B002824E2C02A57A4DF3E72A45E" xlink:type="arc" />
    <link:label id="lab_us-gaap_FairValueByAssetClassAxis_7C3B8B1E9771C231008DA4DF3E722940_verboseLabel_en-US" xlink:label="lab_us-gaap_FairValueByAssetClassAxis_7C3B8B1E9771C231008DA4DF3E722940" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Fair Value by Asset Class [Axis]</link:label>
    <link:label id="lab_us-gaap_FairValueByAssetClassAxis_7C3B8B1E9771C231008DA4DF3E722940_label_en-US" xlink:label="lab_us-gaap_FairValueByAssetClassAxis_7C3B8B1E9771C231008DA4DF3E722940" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value by Asset Class [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FairValueByAssetClassAxis" xlink:label="loc_us-gaap_FairValueByAssetClassAxis_7C3B8B1E9771C231008DA4DF3E722940" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueByAssetClassAxis_7C3B8B1E9771C231008DA4DF3E722940" xlink:to="lab_us-gaap_FairValueByAssetClassAxis_7C3B8B1E9771C231008DA4DF3E722940" xlink:type="arc" />
    <link:label id="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_263C58CA91C111A69738C6896BA6EA45_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_263C58CA91C111A69738C6896BA6EA45" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, by Asset Class [Domain]</link:label>
    <link:label id="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_263C58CA91C111A69738C6896BA6EA45_label_en-US" xlink:label="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_263C58CA91C111A69738C6896BA6EA45" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, by Asset Class [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_263C58CA91C111A69738C6896BA6EA45" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_263C58CA91C111A69738C6896BA6EA45" xlink:to="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_263C58CA91C111A69738C6896BA6EA45" xlink:type="arc" />
    <link:label id="lab_us-gaap_MoneyMarketFundsMember_163098B63DC7377D8C25A4DF3E72F49C_verboseLabel_en-US" xlink:label="lab_us-gaap_MoneyMarketFundsMember_163098B63DC7377D8C25A4DF3E72F49C" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Money Market Funds [Member]</link:label>
    <link:label id="lab_us-gaap_MoneyMarketFundsMember_163098B63DC7377D8C25A4DF3E72F49C_label_en-US" xlink:label="lab_us-gaap_MoneyMarketFundsMember_163098B63DC7377D8C25A4DF3E72F49C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Money Market Funds [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_MoneyMarketFundsMember" xlink:label="loc_us-gaap_MoneyMarketFundsMember_163098B63DC7377D8C25A4DF3E72F49C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MoneyMarketFundsMember_163098B63DC7377D8C25A4DF3E72F49C" xlink:to="lab_us-gaap_MoneyMarketFundsMember_163098B63DC7377D8C25A4DF3E72F49C" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommercialMortgageBackedSecuritiesMember_A907F356342732B64B77A4DF3E73A300_verboseLabel_en-US" xlink:label="lab_us-gaap_CommercialMortgageBackedSecuritiesMember_A907F356342732B64B77A4DF3E73A300" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Mortgage-backed [Member]</link:label>
    <link:label id="lab_us-gaap_CommercialMortgageBackedSecuritiesMember_A907F356342732B64B77A4DF3E73A300_label_en-US" xlink:label="lab_us-gaap_CommercialMortgageBackedSecuritiesMember_A907F356342732B64B77A4DF3E73A300" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Commercial Mortgage Backed Securities [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CommercialMortgageBackedSecuritiesMember" xlink:label="loc_us-gaap_CommercialMortgageBackedSecuritiesMember_A907F356342732B64B77A4DF3E73A300" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommercialMortgageBackedSecuritiesMember_A907F356342732B64B77A4DF3E73A300" xlink:to="lab_us-gaap_CommercialMortgageBackedSecuritiesMember_A907F356342732B64B77A4DF3E73A300" xlink:type="arc" />
    <link:label id="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_13D37CE2D87FB8312AD1A4DF3E73DE77_verboseLabel_en-US" xlink:label="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_13D37CE2D87FB8312AD1A4DF3E73DE77" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]</link:label>
    <link:label id="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_13D37CE2D87FB8312AD1A4DF3E73DE77_label_en-US" xlink:label="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_13D37CE2D87FB8312AD1A4DF3E73DE77" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_13D37CE2D87FB8312AD1A4DF3E73DE77" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_13D37CE2D87FB8312AD1A4DF3E73DE77" xlink:to="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_13D37CE2D87FB8312AD1A4DF3E73DE77" xlink:type="arc" />
    <link:label id="lab_us-gaap_AssetsFairValueDisclosureAbstract_25D12C7FD715AC7E8B75A4DF3E731041_verboseLabel_en-US" xlink:label="lab_us-gaap_AssetsFairValueDisclosureAbstract_25D12C7FD715AC7E8B75A4DF3E731041" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Financial assets carried at fair value</link:label>
    <link:label id="lab_us-gaap_AssetsFairValueDisclosureAbstract_25D12C7FD715AC7E8B75A4DF3E731041_label_en-US" xlink:label="lab_us-gaap_AssetsFairValueDisclosureAbstract_25D12C7FD715AC7E8B75A4DF3E731041" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets, Fair Value Disclosure [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AssetsFairValueDisclosureAbstract" xlink:label="loc_us-gaap_AssetsFairValueDisclosureAbstract_25D12C7FD715AC7E8B75A4DF3E731041" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_25D12C7FD715AC7E8B75A4DF3E731041" xlink:to="lab_us-gaap_AssetsFairValueDisclosureAbstract_25D12C7FD715AC7E8B75A4DF3E731041" xlink:type="arc" />
    <link:label id="lab_us-gaap_CashAndCashEquivalentsFairValueDisclosure_4051CCA0BAD419C37575A4DF3E73E274_verboseLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsFairValueDisclosure_4051CCA0BAD419C37575A4DF3E73E274" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Money market funds</link:label>
    <link:label id="lab_us-gaap_CashAndCashEquivalentsFairValueDisclosure_4051CCA0BAD419C37575A4DF3E73E274_label_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsFairValueDisclosure_4051CCA0BAD419C37575A4DF3E73E274" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash and Cash Equivalents, Fair Value Disclosure</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure" xlink:label="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_4051CCA0BAD419C37575A4DF3E73E274" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_4051CCA0BAD419C37575A4DF3E73E274" xlink:to="lab_us-gaap_CashAndCashEquivalentsFairValueDisclosure_4051CCA0BAD419C37575A4DF3E73E274" xlink:type="arc" />
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesAbstract_96B28AFBB40651230458A4DF3E7311C6_verboseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesAbstract_96B28AFBB40651230458A4DF3E7311C6" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Available-for-sale Securities [Abstract]</link:label>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesAbstract_96B28AFBB40651230458A4DF3E7311C6_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesAbstract_96B28AFBB40651230458A4DF3E7311C6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Available-for-sale Securities [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesAbstract" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesAbstract_96B28AFBB40651230458A4DF3E7311C6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesAbstract_96B28AFBB40651230458A4DF3E7311C6" xlink:to="lab_us-gaap_AvailableForSaleSecuritiesAbstract_96B28AFBB40651230458A4DF3E7311C6" xlink:type="arc" />
    <link:label id="lab_pll_DerivativeFinancialInstrumentAssetsAtFairValueAbstract_E0249DEA5644EF6FC1B7A4DF3E735C7B_verboseLabel_en-US" xlink:label="lab_pll_DerivativeFinancialInstrumentAssetsAtFairValueAbstract_E0249DEA5644EF6FC1B7A4DF3E735C7B" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Derivative financial instruments:</link:label>
    <link:label id="lab_pll_DerivativeFinancialInstrumentAssetsAtFairValueAbstract_E0249DEA5644EF6FC1B7A4DF3E735C7B_label_en-US" xlink:label="lab_pll_DerivativeFinancialInstrumentAssetsAtFairValueAbstract_E0249DEA5644EF6FC1B7A4DF3E735C7B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative Financial Instrument Assets At Fair Value [Abstract]</link:label>
    <link:label id="lab_pll_DerivativeFinancialInstrumentAssetsAtFairValueAbstract_E0249DEA5644EF6FC1B7A4DF3E735C7B_documentation_en-US" xlink:label="lab_pll_DerivativeFinancialInstrumentAssetsAtFairValueAbstract_E0249DEA5644EF6FC1B7A4DF3E735C7B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Derivative Financial Instrument Assets At Fair Value.</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_DerivativeFinancialInstrumentAssetsAtFairValueAbstract" xlink:label="loc_pll_DerivativeFinancialInstrumentAssetsAtFairValueAbstract_E0249DEA5644EF6FC1B7A4DF3E735C7B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_DerivativeFinancialInstrumentAssetsAtFairValueAbstract_E0249DEA5644EF6FC1B7A4DF3E735C7B" xlink:to="lab_pll_DerivativeFinancialInstrumentAssetsAtFairValueAbstract_E0249DEA5644EF6FC1B7A4DF3E735C7B" xlink:type="arc" />
    <link:label id="lab_us-gaap_ForeignCurrencyContractAssetFairValueDisclosure_37C4053874A14C1F8A7AA4DF3E7324FE_verboseLabel_en-US" xlink:label="lab_us-gaap_ForeignCurrencyContractAssetFairValueDisclosure_37C4053874A14C1F8A7AA4DF3E7324FE" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Foreign exchange forward contracts</link:label>
    <link:label id="lab_us-gaap_ForeignCurrencyContractAssetFairValueDisclosure_37C4053874A14C1F8A7AA4DF3E7324FE_label_en-US" xlink:label="lab_us-gaap_ForeignCurrencyContractAssetFairValueDisclosure_37C4053874A14C1F8A7AA4DF3E7324FE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Foreign Currency Contract, Asset, Fair Value Disclosure</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ForeignCurrencyContractAssetFairValueDisclosure" xlink:label="loc_us-gaap_ForeignCurrencyContractAssetFairValueDisclosure_37C4053874A14C1F8A7AA4DF3E7324FE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ForeignCurrencyContractAssetFairValueDisclosure_37C4053874A14C1F8A7AA4DF3E7324FE" xlink:to="lab_us-gaap_ForeignCurrencyContractAssetFairValueDisclosure_37C4053874A14C1F8A7AA4DF3E7324FE" xlink:type="arc" />
    <link:label id="lab_pll_DerivativeFinancialInstrumentLiabilitiesAtFairValueAbstract_87DFA70DA88B650C7AA9A4DF3E73E1E4_verboseLabel_en-US" xlink:label="lab_pll_DerivativeFinancialInstrumentLiabilitiesAtFairValueAbstract_87DFA70DA88B650C7AA9A4DF3E73E1E4" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Derivative financial instruments:</link:label>
    <link:label id="lab_pll_DerivativeFinancialInstrumentLiabilitiesAtFairValueAbstract_87DFA70DA88B650C7AA9A4DF3E73E1E4_label_en-US" xlink:label="lab_pll_DerivativeFinancialInstrumentLiabilitiesAtFairValueAbstract_87DFA70DA88B650C7AA9A4DF3E73E1E4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative Financial Instrument Liabilities At Fair Value [Abstract]</link:label>
    <link:label id="lab_pll_DerivativeFinancialInstrumentLiabilitiesAtFairValueAbstract_87DFA70DA88B650C7AA9A4DF3E73E1E4_documentation_en-US" xlink:label="lab_pll_DerivativeFinancialInstrumentLiabilitiesAtFairValueAbstract_87DFA70DA88B650C7AA9A4DF3E73E1E4" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Derivative Financial Instrument Liabilities At Fair Value.</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_DerivativeFinancialInstrumentLiabilitiesAtFairValueAbstract" xlink:label="loc_pll_DerivativeFinancialInstrumentLiabilitiesAtFairValueAbstract_87DFA70DA88B650C7AA9A4DF3E73E1E4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_DerivativeFinancialInstrumentLiabilitiesAtFairValueAbstract_87DFA70DA88B650C7AA9A4DF3E73E1E4" xlink:to="lab_pll_DerivativeFinancialInstrumentLiabilitiesAtFairValueAbstract_87DFA70DA88B650C7AA9A4DF3E73E1E4" xlink:type="arc" />
    <link:label id="lab_us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure_DCE934641D9748EBE55AA4DF3E73BF12_verboseLabel_en-US" xlink:label="lab_us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure_DCE934641D9748EBE55AA4DF3E73BF12" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Foreign exchange forward contracts</link:label>
    <link:label id="lab_us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure_DCE934641D9748EBE55AA4DF3E73BF12_label_en-US" xlink:label="lab_us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure_DCE934641D9748EBE55AA4DF3E73BF12" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Foreign Currency Contracts, Liability, Fair Value Disclosure</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure" xlink:label="loc_us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure_DCE934641D9748EBE55AA4DF3E73BF12" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure_DCE934641D9748EBE55AA4DF3E73BF12" xlink:to="lab_us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure_DCE934641D9748EBE55AA4DF3E73BF12" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerShareAbstract_E3DD50913C3A3A49DC14A4DF3D142DF6_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareAbstract_E3DD50913C3A3A49DC14A4DF3D142DF6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Earnings Per Share [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_EarningsPerShareAbstract" xlink:label="loc_us-gaap_EarningsPerShareAbstract_E3DD50913C3A3A49DC14A4DF3D142DF6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareAbstract_E3DD50913C3A3A49DC14A4DF3D142DF6" xlink:to="lab_us-gaap_EarningsPerShareAbstract_E3DD50913C3A3A49DC14A4DF3D142DF6" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfWeightedAverageNumberOfSharesTableTextBlock_6E272BE8EBDB23BEA349A4DF3D1568AF_verboseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfWeightedAverageNumberOfSharesTableTextBlock_6E272BE8EBDB23BEA349A4DF3D1568AF" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Earnings Per Share, Basic and Diluted</link:label>
    <link:label id="lab_us-gaap_ScheduleOfWeightedAverageNumberOfSharesTableTextBlock_6E272BE8EBDB23BEA349A4DF3D1568AF_label_en-US" xlink:label="lab_us-gaap_ScheduleOfWeightedAverageNumberOfSharesTableTextBlock_6E272BE8EBDB23BEA349A4DF3D1568AF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Weighted Average Number of Shares [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfWeightedAverageNumberOfSharesTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfWeightedAverageNumberOfSharesTableTextBlock_6E272BE8EBDB23BEA349A4DF3D1568AF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfWeightedAverageNumberOfSharesTableTextBlock_6E272BE8EBDB23BEA349A4DF3D1568AF" xlink:to="lab_us-gaap_ScheduleOfWeightedAverageNumberOfSharesTableTextBlock_6E272BE8EBDB23BEA349A4DF3D1568AF" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_4A20A8272C8C767FA157A4DF38534B23_verboseLabel_en-US" xlink:label="lab_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_4A20A8272C8C767FA157A4DF38534B23" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">GOODWILL AND INTANGIBLE ASSETS</link:label>
    <link:label id="lab_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_4A20A8272C8C767FA157A4DF38534B23_label_en-US" xlink:label="lab_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_4A20A8272C8C767FA157A4DF38534B23" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill and Intangible Assets Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_4A20A8272C8C767FA157A4DF38534B23" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_4A20A8272C8C767FA157A4DF38534B23" xlink:to="lab_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_4A20A8272C8C767FA157A4DF38534B23" xlink:type="arc" />
    <link:label id="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_E71FFAECEA62C3588139A4DF3D5668B9_verboseLabel_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_E71FFAECEA62C3588139A4DF3D5668B9" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Basic shares outstanding</link:label>
    <link:label id="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_E71FFAECEA62C3588139A4DF3D5668B9_label_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_E71FFAECEA62C3588139A4DF3D5668B9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Weighted Average Number of Shares Outstanding, Basic</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_E71FFAECEA62C3588139A4DF3D5668B9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_E71FFAECEA62C3588139A4DF3D5668B9" xlink:to="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_E71FFAECEA62C3588139A4DF3D5668B9" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_AC986B044B6D759E7F21A4DF3D56C660_verboseLabel_en-US" xlink:label="lab_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_AC986B044B6D759E7F21A4DF3D56C660" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Effect of stock plans</link:label>
    <link:label id="lab_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_AC986B044B6D759E7F21A4DF3D56C660_label_en-US" xlink:label="lab_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_AC986B044B6D759E7F21A4DF3D56C660" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Incremental Common Shares Attributable to Share-based Payment Arrangements</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_AC986B044B6D759E7F21A4DF3D56C660" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_AC986B044B6D759E7F21A4DF3D56C660" xlink:to="lab_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_AC986B044B6D759E7F21A4DF3D56C660" xlink:type="arc" />
    <link:label id="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_24750FC3B0D729C9AB6EA4DF3D567A9F_totalLabel_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_24750FC3B0D729C9AB6EA4DF3D567A9F" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Diluted shares outstanding</link:label>
    <link:label id="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_24750FC3B0D729C9AB6EA4DF3D567A9F_label_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_24750FC3B0D729C9AB6EA4DF3D567A9F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Weighted Average Number of Shares Outstanding, Diluted</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_24750FC3B0D729C9AB6EA4DF3D567A9F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_24750FC3B0D729C9AB6EA4DF3D567A9F" xlink:to="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_24750FC3B0D729C9AB6EA4DF3D567A9F" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock_842EC3E232D77811F537A4DF3E2F4B3F_verboseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock_842EC3E232D77811F537A4DF3E2F4B3F" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Schedule of financial assets and liabilities that are measured at fair value on a recurring basis</link:label>
    <link:label id="lab_us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock_842EC3E232D77811F537A4DF3E2F4B3F_label_en-US" xlink:label="lab_us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock_842EC3E232D77811F537A4DF3E2F4B3F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock_842EC3E232D77811F537A4DF3E2F4B3F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock_842EC3E232D77811F537A4DF3E2F4B3F" xlink:to="lab_us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock_842EC3E232D77811F537A4DF3E2F4B3F" xlink:type="arc" />
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue_209CF92C443FADB6FB4FA4DF3F4C8F47_verboseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue_209CF92C443FADB6FB4FA4DF3F4C8F47" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value</link:label>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue_209CF92C443FADB6FB4FA4DF3F4C8F47_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue_209CF92C443FADB6FB4FA4DF3F4C8F47" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue_209CF92C443FADB6FB4FA4DF3F4C8F47" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue_209CF92C443FADB6FB4FA4DF3F4C8F47" xlink:to="lab_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue_209CF92C443FADB6FB4FA4DF3F4C8F47" xlink:type="arc" />
    <link:label id="lab_us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses1_F88E16A917E17427488CA4DF3F4DD6D6_verboseLabel_en-US" xlink:label="lab_us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses1_F88E16A917E17427488CA4DF3F4DD6D6" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses</link:label>
    <link:label id="lab_us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses1_F88E16A917E17427488CA4DF3F4DD6D6_label_en-US" xlink:label="lab_us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses1_F88E16A917E17427488CA4DF3F4DD6D6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses1" xlink:label="loc_us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses1_F88E16A917E17427488CA4DF3F4DD6D6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses1_F88E16A917E17427488CA4DF3F4DD6D6" xlink:to="lab_us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses1_F88E16A917E17427488CA4DF3F4DD6D6" xlink:type="arc" />
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue_F6425260B7851A3E0E17A4DF3F4DD2D1_verboseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue_F6425260B7851A3E0E17A4DF3F4DD2D1" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value</link:label>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue_F6425260B7851A3E0E17A4DF3F4DD2D1_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue_F6425260B7851A3E0E17A4DF3F4DD2D1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue_F6425260B7851A3E0E17A4DF3F4DD2D1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue_F6425260B7851A3E0E17A4DF3F4DD2D1" xlink:to="lab_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue_F6425260B7851A3E0E17A4DF3F4DD2D1" xlink:type="arc" />
    <link:label id="lab_us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses1_FD8BF89EF4A443E127A6A4DF3F4D8014_verboseLabel_en-US" xlink:label="lab_us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses1_FD8BF89EF4A443E127A6A4DF3F4D8014" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses</link:label>
    <link:label id="lab_us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses1_FD8BF89EF4A443E127A6A4DF3F4D8014_label_en-US" xlink:label="lab_us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses1_FD8BF89EF4A443E127A6A4DF3F4D8014" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses1" xlink:label="loc_us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses1_FD8BF89EF4A443E127A6A4DF3F4D8014" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses1_FD8BF89EF4A443E127A6A4DF3F4D8014" xlink:to="lab_us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses1_FD8BF89EF4A443E127A6A4DF3F4D8014" xlink:type="arc" />
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue_E1B3EC6C7B8E5493FAC6A4DF3F4DD46E_verboseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue_E1B3EC6C7B8E5493FAC6A4DF3F4DD46E" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value</link:label>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue_E1B3EC6C7B8E5493FAC6A4DF3F4DD46E_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue_E1B3EC6C7B8E5493FAC6A4DF3F4DD46E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue_E1B3EC6C7B8E5493FAC6A4DF3F4DD46E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue_E1B3EC6C7B8E5493FAC6A4DF3F4DD46E" xlink:to="lab_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue_E1B3EC6C7B8E5493FAC6A4DF3F4DD46E" xlink:type="arc" />
    <link:label id="lab_us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses1_191899B339934D001179A4DF3F4DEE10_verboseLabel_en-US" xlink:label="lab_us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses1_191899B339934D001179A4DF3F4DEE10" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses</link:label>
    <link:label id="lab_us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses1_191899B339934D001179A4DF3F4DEE10_label_en-US" xlink:label="lab_us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses1_191899B339934D001179A4DF3F4DEE10" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses1" xlink:label="loc_us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses1_191899B339934D001179A4DF3F4DEE10" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses1_191899B339934D001179A4DF3F4DEE10" xlink:to="lab_us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses1_191899B339934D001179A4DF3F4DEE10" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfGoodwillTextBlock_02F65383068EEF1C5D7AA4DF38858F0E_verboseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfGoodwillTextBlock_02F65383068EEF1C5D7AA4DF38858F0E" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Goodwill, allocated by reportable segment</link:label>
    <link:label id="lab_us-gaap_ScheduleOfGoodwillTextBlock_02F65383068EEF1C5D7AA4DF38858F0E_label_en-US" xlink:label="lab_us-gaap_ScheduleOfGoodwillTextBlock_02F65383068EEF1C5D7AA4DF38858F0E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Goodwill [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfGoodwillTextBlock" xlink:label="loc_us-gaap_ScheduleOfGoodwillTextBlock_02F65383068EEF1C5D7AA4DF38858F0E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfGoodwillTextBlock_02F65383068EEF1C5D7AA4DF38858F0E" xlink:to="lab_us-gaap_ScheduleOfGoodwillTextBlock_02F65383068EEF1C5D7AA4DF38858F0E" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsByMajorClassTextBlock_9BA0037C1BDA694695A4A4DF38851198_verboseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsByMajorClassTextBlock_9BA0037C1BDA694695A4A4DF38851198" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Intangible Assets</link:label>
    <link:label id="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsByMajorClassTextBlock_9BA0037C1BDA694695A4A4DF38851198_label_en-US" xlink:label="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsByMajorClassTextBlock_9BA0037C1BDA694695A4A4DF38851198" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Finite-Lived Intangible Assets by Major Class [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsByMajorClassTextBlock" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsByMajorClassTextBlock_9BA0037C1BDA694695A4A4DF38851198" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsByMajorClassTextBlock_9BA0037C1BDA694695A4A4DF38851198" xlink:to="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsByMajorClassTextBlock_9BA0037C1BDA694695A4A4DF38851198" xlink:type="arc" />
    <link:label id="lab_pll_EsppMember_91F90B8F882B45ED330AE4225C56FF1C_terseLabel_en-US" xlink:label="lab_pll_EsppMember_91F90B8F882B45ED330AE4225C56FF1C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">ESPP [Member]</link:label>
    <link:label id="lab_pll_EsppMember_91F90B8F882B45ED330AE4225C56FF1C_label_en-US" xlink:label="lab_pll_EsppMember_91F90B8F882B45ED330AE4225C56FF1C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Espp [Member]</link:label>
    <link:label id="lab_pll_EsppMember_91F90B8F882B45ED330AE4225C56FF1C_documentation_en-US" xlink:label="lab_pll_EsppMember_91F90B8F882B45ED330AE4225C56FF1C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Employee Stock Purchase Plan [Member]</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_EsppMember" xlink:label="loc_pll_EsppMember_91F90B8F882B45ED330AE4225C56FF1C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_EsppMember_91F90B8F882B45ED330AE4225C56FF1C" xlink:to="lab_pll_EsppMember_91F90B8F882B45ED330AE4225C56FF1C" xlink:type="arc" />
    <link:label id="lab_pll_MsppMember_FBF2EB7491E34A8A1D7DE4231829C38D_terseLabel_en-US" xlink:label="lab_pll_MsppMember_FBF2EB7491E34A8A1D7DE4231829C38D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">MSPP [Member]</link:label>
    <link:label id="lab_pll_MsppMember_FBF2EB7491E34A8A1D7DE4231829C38D_label_en-US" xlink:label="lab_pll_MsppMember_FBF2EB7491E34A8A1D7DE4231829C38D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Mspp [Member]</link:label>
    <link:label id="lab_pll_MsppMember_FBF2EB7491E34A8A1D7DE4231829C38D_documentation_en-US" xlink:label="lab_pll_MsppMember_FBF2EB7491E34A8A1D7DE4231829C38D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Management Stock Purchase Plan [Member]</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_MsppMember" xlink:label="loc_pll_MsppMember_FBF2EB7491E34A8A1D7DE4231829C38D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_MsppMember_FBF2EB7491E34A8A1D7DE4231829C38D" xlink:to="lab_pll_MsppMember_FBF2EB7491E34A8A1D7DE4231829C38D" xlink:type="arc" />
    <link:label id="lab_us-gaap_AllocatedShareBasedCompensationExpense_3FD80F3F1F2945C9EFDDE41EF2B6C1E9_terseLabel_en-US" xlink:label="lab_us-gaap_AllocatedShareBasedCompensationExpense_3FD80F3F1F2945C9EFDDE41EF2B6C1E9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Allocated Share-based Compensation Expense</link:label>
    <link:label id="lab_us-gaap_AllocatedShareBasedCompensationExpense_3FD80F3F1F2945C9EFDDE41EF2B6C1E9_label_en-US" xlink:label="lab_us-gaap_AllocatedShareBasedCompensationExpense_3FD80F3F1F2945C9EFDDE41EF2B6C1E9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Allocated Share-based Compensation Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_3FD80F3F1F2945C9EFDDE41EF2B6C1E9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AllocatedShareBasedCompensationExpense_3FD80F3F1F2945C9EFDDE41EF2B6C1E9" xlink:to="lab_us-gaap_AllocatedShareBasedCompensationExpense_3FD80F3F1F2945C9EFDDE41EF2B6C1E9" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensation_3EEA9A232C75675BE21DE42594658278_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensation_3EEA9A232C75675BE21DE42594658278" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share-based Compensation</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensation_3EEA9A232C75675BE21DE42594658278_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensation_3EEA9A232C75675BE21DE42594658278" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="loc_us-gaap_ShareBasedCompensation_3EEA9A232C75675BE21DE42594658278" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensation_3EEA9A232C75675BE21DE42594658278" xlink:to="lab_us-gaap_ShareBasedCompensation_3EEA9A232C75675BE21DE42594658278" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockRepurchaseProgramAuthorizedAmount_F1B5067B00D83F7BC6B8A4DF39A1FFC1_verboseLabel_en-US" xlink:label="lab_us-gaap_StockRepurchaseProgramAuthorizedAmount_F1B5067B00D83F7BC6B8A4DF39A1FFC1" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Additional expenditure to repurchase shares, Authorized</link:label>
    <link:label id="lab_us-gaap_StockRepurchaseProgramAuthorizedAmount_F1B5067B00D83F7BC6B8A4DF39A1FFC1_label_en-US" xlink:label="lab_us-gaap_StockRepurchaseProgramAuthorizedAmount_F1B5067B00D83F7BC6B8A4DF39A1FFC1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stock Repurchase Program, Authorized Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StockRepurchaseProgramAuthorizedAmount" xlink:label="loc_us-gaap_StockRepurchaseProgramAuthorizedAmount_F1B5067B00D83F7BC6B8A4DF39A1FFC1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockRepurchaseProgramAuthorizedAmount_F1B5067B00D83F7BC6B8A4DF39A1FFC1" xlink:to="lab_us-gaap_StockRepurchaseProgramAuthorizedAmount_F1B5067B00D83F7BC6B8A4DF39A1FFC1" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_72C7198942FD21F2D4EA79087D047DAD_terseLabel_en-US" xlink:label="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_72C7198942FD21F2D4EA79087D047DAD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Payments for Repurchase of Common Stock</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_72C7198942FD21F2D4EA79087D047DAD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_72C7198942FD21F2D4EA79087D047DAD" xlink:to="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_72C7198942FD21F2D4EA79087D047DAD" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount_45603870EE595F5CDD80A4DF39A1DE01_verboseLabel_en-US" xlink:label="lab_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount_45603870EE595F5CDD80A4DF39A1DE01" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Stock Repurchase Program, Remaining Authorized Repurchase Amount</link:label>
    <link:label id="lab_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount_45603870EE595F5CDD80A4DF39A1DE01_label_en-US" xlink:label="lab_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount_45603870EE595F5CDD80A4DF39A1DE01" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stock Repurchase Program, Remaining Authorized Repurchase Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount" xlink:label="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount_45603870EE595F5CDD80A4DF39A1DE01" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount_45603870EE595F5CDD80A4DF39A1DE01" xlink:to="lab_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount_45603870EE595F5CDD80A4DF39A1DE01" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross_625FEFF011AEB5109260A4DF39A17838_verboseLabel_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross_625FEFF011AEB5109260A4DF39A17838" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Shares issued for stock plans</link:label>
    <link:label id="lab_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross_625FEFF011AEB5109260A4DF39A17838_label_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross_625FEFF011AEB5109260A4DF39A17838" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stock Issued During Period, Shares, Share-based Compensation, Gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross_625FEFF011AEB5109260A4DF39A17838" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross_625FEFF011AEB5109260A4DF39A17838" xlink:to="lab_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross_625FEFF011AEB5109260A4DF39A17838" xlink:type="arc" />
    <link:label id="lab_us-gaap_TreasuryStockShares_0DA85AF85957291BD5E2A4DF39A19916_verboseLabel_en-US" xlink:label="lab_us-gaap_TreasuryStockShares_0DA85AF85957291BD5E2A4DF39A19916" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Treasury stock, shares</link:label>
    <link:label id="lab_us-gaap_TreasuryStockShares_0DA85AF85957291BD5E2A4DF39A19916_label_en-US" xlink:label="lab_us-gaap_TreasuryStockShares_0DA85AF85957291BD5E2A4DF39A19916" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Treasury Stock, Shares</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_TreasuryStockShares" xlink:label="loc_us-gaap_TreasuryStockShares_0DA85AF85957291BD5E2A4DF39A19916" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TreasuryStockShares_0DA85AF85957291BD5E2A4DF39A19916" xlink:to="lab_us-gaap_TreasuryStockShares_0DA85AF85957291BD5E2A4DF39A19916" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerShareTextBlock_883EC45A437105F72FCEA4DF3CD9DDEB_verboseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareTextBlock_883EC45A437105F72FCEA4DF3CD9DDEB" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">EARNINGS PER SHARE</link:label>
    <link:label id="lab_us-gaap_EarningsPerShareTextBlock_883EC45A437105F72FCEA4DF3CD9DDEB_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareTextBlock_883EC45A437105F72FCEA4DF3CD9DDEB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Earnings Per Share [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_EarningsPerShareTextBlock" xlink:label="loc_us-gaap_EarningsPerShareTextBlock_883EC45A437105F72FCEA4DF3CD9DDEB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareTextBlock_883EC45A437105F72FCEA4DF3CD9DDEB" xlink:to="lab_us-gaap_EarningsPerShareTextBlock_883EC45A437105F72FCEA4DF3CD9DDEB" xlink:type="arc" />
    <link:label id="lab_us-gaap_RestructuringAndRelatedActivitiesDisclosureTextBlock_80D10F41E1F3AFDD4711A4DF3A3A3694_verboseLabel_en-US" xlink:label="lab_us-gaap_RestructuringAndRelatedActivitiesDisclosureTextBlock_80D10F41E1F3AFDD4711A4DF3A3A3694" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">RESTRUCTURING AND OTHER CHARGES, NET</link:label>
    <link:label id="lab_us-gaap_RestructuringAndRelatedActivitiesDisclosureTextBlock_80D10F41E1F3AFDD4711A4DF3A3A3694_label_en-US" xlink:label="lab_us-gaap_RestructuringAndRelatedActivitiesDisclosureTextBlock_80D10F41E1F3AFDD4711A4DF3A3A3694" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restructuring and Related Activities Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_RestructuringAndRelatedActivitiesDisclosureTextBlock" xlink:label="loc_us-gaap_RestructuringAndRelatedActivitiesDisclosureTextBlock_80D10F41E1F3AFDD4711A4DF3A3A3694" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestructuringAndRelatedActivitiesDisclosureTextBlock_80D10F41E1F3AFDD4711A4DF3A3A3694" xlink:to="lab_us-gaap_RestructuringAndRelatedActivitiesDisclosureTextBlock_80D10F41E1F3AFDD4711A4DF3A3A3694" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeStatementAbstract_69E6BF80A97DF8B0D805A4DF35DCA78E_label_en-US" xlink:label="lab_us-gaap_IncomeStatementAbstract_69E6BF80A97DF8B0D805A4DF35DCA78E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Statement [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeStatementAbstract" xlink:label="loc_us-gaap_IncomeStatementAbstract_69E6BF80A97DF8B0D805A4DF35DCA78E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeStatementAbstract_69E6BF80A97DF8B0D805A4DF35DCA78E" xlink:to="lab_us-gaap_IncomeStatementAbstract_69E6BF80A97DF8B0D805A4DF35DCA78E" xlink:type="arc" />
    <link:label id="lab_us-gaap_SalesRevenueNet_104D785B91049925CD12A4DF35DCAB50_terseLabel_en-US" xlink:label="lab_us-gaap_SalesRevenueNet_104D785B91049925CD12A4DF35DCAB50" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net sales</link:label>
    <link:label id="lab_us-gaap_SalesRevenueNet_104D785B91049925CD12A4DF35DCAB50_label_en-US" xlink:label="lab_us-gaap_SalesRevenueNet_104D785B91049925CD12A4DF35DCAB50" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SalesRevenueNet" xlink:label="loc_us-gaap_SalesRevenueNet_104D785B91049925CD12A4DF35DCAB50" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SalesRevenueNet_104D785B91049925CD12A4DF35DCAB50" xlink:to="lab_us-gaap_SalesRevenueNet_104D785B91049925CD12A4DF35DCAB50" xlink:type="arc" />
    <link:label id="lab_us-gaap_CostOfGoodsAndServicesSold_FEDCD5AE238815F8A697A4DF35DC2F69_terseLabel_en-US" xlink:label="lab_us-gaap_CostOfGoodsAndServicesSold_FEDCD5AE238815F8A697A4DF35DC2F69" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cost of sales</link:label>
    <link:label id="lab_us-gaap_CostOfGoodsAndServicesSold_FEDCD5AE238815F8A697A4DF35DC2F69_label_en-US" xlink:label="lab_us-gaap_CostOfGoodsAndServicesSold_FEDCD5AE238815F8A697A4DF35DC2F69" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cost of Goods and Services Sold</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CostOfGoodsAndServicesSold" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_FEDCD5AE238815F8A697A4DF35DC2F69" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CostOfGoodsAndServicesSold_FEDCD5AE238815F8A697A4DF35DC2F69" xlink:to="lab_us-gaap_CostOfGoodsAndServicesSold_FEDCD5AE238815F8A697A4DF35DC2F69" xlink:type="arc" />
    <link:label id="lab_us-gaap_GrossProfit_BB3F3FDADB3BEFAA3E8BA4DF35DC8D47_totalLabel_en-US" xlink:label="lab_us-gaap_GrossProfit_BB3F3FDADB3BEFAA3E8BA4DF35DC8D47" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Gross profit</link:label>
    <link:label id="lab_us-gaap_GrossProfit_BB3F3FDADB3BEFAA3E8BA4DF35DC8D47_label_en-US" xlink:label="lab_us-gaap_GrossProfit_BB3F3FDADB3BEFAA3E8BA4DF35DC8D47" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gross Profit</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_GrossProfit" xlink:label="loc_us-gaap_GrossProfit_BB3F3FDADB3BEFAA3E8BA4DF35DC8D47" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GrossProfit_BB3F3FDADB3BEFAA3E8BA4DF35DC8D47" xlink:to="lab_us-gaap_GrossProfit_BB3F3FDADB3BEFAA3E8BA4DF35DC8D47" xlink:type="arc" />
    <link:label id="lab_us-gaap_SellingGeneralAndAdministrativeExpense_67FD8565F28A6DEAB7DDA4DF35DC4BCA_terseLabel_en-US" xlink:label="lab_us-gaap_SellingGeneralAndAdministrativeExpense_67FD8565F28A6DEAB7DDA4DF35DC4BCA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Selling, general and administrative expenses</link:label>
    <link:label id="lab_us-gaap_SellingGeneralAndAdministrativeExpense_67FD8565F28A6DEAB7DDA4DF35DC4BCA_label_en-US" xlink:label="lab_us-gaap_SellingGeneralAndAdministrativeExpense_67FD8565F28A6DEAB7DDA4DF35DC4BCA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Selling, General and Administrative Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SellingGeneralAndAdministrativeExpense" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_67FD8565F28A6DEAB7DDA4DF35DC4BCA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SellingGeneralAndAdministrativeExpense_67FD8565F28A6DEAB7DDA4DF35DC4BCA" xlink:to="lab_us-gaap_SellingGeneralAndAdministrativeExpense_67FD8565F28A6DEAB7DDA4DF35DC4BCA" xlink:type="arc" />
    <link:label id="lab_us-gaap_ResearchAndDevelopmentExpense_96647927AEBC747D6665A4DF35DCFEFD_terseLabel_en-US" xlink:label="lab_us-gaap_ResearchAndDevelopmentExpense_96647927AEBC747D6665A4DF35DCFEFD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Research and development</link:label>
    <link:label id="lab_us-gaap_ResearchAndDevelopmentExpense_96647927AEBC747D6665A4DF35DCFEFD_label_en-US" xlink:label="lab_us-gaap_ResearchAndDevelopmentExpense_96647927AEBC747D6665A4DF35DCFEFD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Research and Development Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ResearchAndDevelopmentExpense" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpense_96647927AEBC747D6665A4DF35DCFEFD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ResearchAndDevelopmentExpense_96647927AEBC747D6665A4DF35DCFEFD" xlink:to="lab_us-gaap_ResearchAndDevelopmentExpense_96647927AEBC747D6665A4DF35DCFEFD" xlink:type="arc" />
    <link:label id="lab_pll_RestructuringAndOtherGainsCharges_B72E0E0921EEAADCEAE0A4DF35DC5916_terseLabel_en-US" xlink:label="lab_pll_RestructuringAndOtherGainsCharges_B72E0E0921EEAADCEAE0A4DF35DC5916" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restructuring and other charges, net</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_RestructuringAndOtherGainsCharges" xlink:label="loc_pll_RestructuringAndOtherGainsCharges_B72E0E0921EEAADCEAE0A4DF35DC5916" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_RestructuringAndOtherGainsCharges_B72E0E0921EEAADCEAE0A4DF35DC5916" xlink:to="lab_pll_RestructuringAndOtherGainsCharges_B72E0E0921EEAADCEAE0A4DF35DC5916" xlink:type="arc" />
    <link:label id="lab_us-gaap_InterestIncomeExpenseNonoperatingNet_CCCEF47F358840003A8FA4DF35DC0972_negatedLabel_en-US" xlink:label="lab_us-gaap_InterestIncomeExpenseNonoperatingNet_CCCEF47F358840003A8FA4DF35DC0972" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Interest expense, net</link:label>
    <link:label id="lab_us-gaap_InterestIncomeExpenseNonoperatingNet_CCCEF47F358840003A8FA4DF35DC0972_label_en-US" xlink:label="lab_us-gaap_InterestIncomeExpenseNonoperatingNet_CCCEF47F358840003A8FA4DF35DC0972" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest Income (Expense), Nonoperating, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestIncomeExpenseNonoperatingNet" xlink:label="loc_us-gaap_InterestIncomeExpenseNonoperatingNet_CCCEF47F358840003A8FA4DF35DC0972" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestIncomeExpenseNonoperatingNet_CCCEF47F358840003A8FA4DF35DC0972" xlink:to="lab_us-gaap_InterestIncomeExpenseNonoperatingNet_CCCEF47F358840003A8FA4DF35DC0972" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_ED9D3968F5EFE62CB2BBA4DF35DCAE3C_totalLabel_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_ED9D3968F5EFE62CB2BBA4DF35DCAE3C" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Earnings before income taxes</link:label>
    <link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_ED9D3968F5EFE62CB2BBA4DF35DCAE3C_label_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_ED9D3968F5EFE62CB2BBA4DF35DCAE3C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_ED9D3968F5EFE62CB2BBA4DF35DCAE3C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_ED9D3968F5EFE62CB2BBA4DF35DCAE3C" xlink:to="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_ED9D3968F5EFE62CB2BBA4DF35DCAE3C" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeTaxExpenseBenefit_E9B80E1828BC95B55A10A4DF35DC6E15_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxExpenseBenefit_E9B80E1828BC95B55A10A4DF35DC6E15" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Provision for income taxes</link:label>
    <link:label id="lab_us-gaap_IncomeTaxExpenseBenefit_E9B80E1828BC95B55A10A4DF35DC6E15_label_en-US" xlink:label="lab_us-gaap_IncomeTaxExpenseBenefit_E9B80E1828BC95B55A10A4DF35DC6E15" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Tax Expense (Benefit)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_E9B80E1828BC95B55A10A4DF35DC6E15" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_E9B80E1828BC95B55A10A4DF35DC6E15" xlink:to="lab_us-gaap_IncomeTaxExpenseBenefit_E9B80E1828BC95B55A10A4DF35DC6E15" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetIncomeLoss_1474C71B5C8A341A2E68A4DF35DCDE29_totalLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLoss_1474C71B5C8A341A2E68A4DF35DCDE29" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net earnings</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_1474C71B5C8A341A2E68A4DF35DCDE29" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetIncomeLoss_1474C71B5C8A341A2E68A4DF35DCDE29" xlink:to="lab_us-gaap_NetIncomeLoss_1474C71B5C8A341A2E68A4DF35DCDE29" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerShareAbstract_882A66FB5B70EF9CDBFEA4DF35DCF622_verboseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareAbstract_882A66FB5B70EF9CDBFEA4DF35DCF622" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Earnings per share:</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_EarningsPerShareAbstract" xlink:label="loc_us-gaap_EarningsPerShareAbstract_882A66FB5B70EF9CDBFEA4DF35DCF622" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareAbstract_882A66FB5B70EF9CDBFEA4DF35DCF622" xlink:to="lab_us-gaap_EarningsPerShareAbstract_882A66FB5B70EF9CDBFEA4DF35DCF622" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerShareBasic_71C0DC0DDFB10025624AA4DF35DCADD6_terseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasic_71C0DC0DDFB10025624AA4DF35DCADD6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Basic</link:label>
    <link:label id="lab_us-gaap_EarningsPerShareBasic_71C0DC0DDFB10025624AA4DF35DCADD6_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasic_71C0DC0DDFB10025624AA4DF35DCADD6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Earnings Per Share, Basic</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_EarningsPerShareBasic" xlink:label="loc_us-gaap_EarningsPerShareBasic_71C0DC0DDFB10025624AA4DF35DCADD6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareBasic_71C0DC0DDFB10025624AA4DF35DCADD6" xlink:to="lab_us-gaap_EarningsPerShareBasic_71C0DC0DDFB10025624AA4DF35DCADD6" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerShareDiluted_DD18FF5D63EAC23690D4A4DF35DC1C64_terseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareDiluted_DD18FF5D63EAC23690D4A4DF35DC1C64" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Diluted</link:label>
    <link:label id="lab_us-gaap_EarningsPerShareDiluted_DD18FF5D63EAC23690D4A4DF35DC1C64_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareDiluted_DD18FF5D63EAC23690D4A4DF35DC1C64" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Earnings Per Share, Diluted</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_EarningsPerShareDiluted" xlink:label="loc_us-gaap_EarningsPerShareDiluted_DD18FF5D63EAC23690D4A4DF35DC1C64" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareDiluted_DD18FF5D63EAC23690D4A4DF35DC1C64" xlink:to="lab_us-gaap_EarningsPerShareDiluted_DD18FF5D63EAC23690D4A4DF35DC1C64" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockDividendsPerShareDeclared_61B65A0A88C47D18BDB9A4DF35DCB65B_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockDividendsPerShareDeclared_61B65A0A88C47D18BDB9A4DF35DCB65B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Dividends declared per share</link:label>
    <link:label id="lab_us-gaap_CommonStockDividendsPerShareDeclared_61B65A0A88C47D18BDB9A4DF35DCB65B_label_en-US" xlink:label="lab_us-gaap_CommonStockDividendsPerShareDeclared_61B65A0A88C47D18BDB9A4DF35DCB65B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stock, Dividends, Per Share, Declared</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CommonStockDividendsPerShareDeclared" xlink:label="loc_us-gaap_CommonStockDividendsPerShareDeclared_61B65A0A88C47D18BDB9A4DF35DCB65B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockDividendsPerShareDeclared_61B65A0A88C47D18BDB9A4DF35DCB65B" xlink:to="lab_us-gaap_CommonStockDividendsPerShareDeclared_61B65A0A88C47D18BDB9A4DF35DCB65B" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerShareBasicOtherDisclosuresAbstract_7273933F3E2C6F61DD23A4DF35DCA131_verboseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasicOtherDisclosuresAbstract_7273933F3E2C6F61DD23A4DF35DCA131" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Average shares outstanding:</link:label>
    <link:label id="lab_us-gaap_EarningsPerShareBasicOtherDisclosuresAbstract_7273933F3E2C6F61DD23A4DF35DCA131_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasicOtherDisclosuresAbstract_7273933F3E2C6F61DD23A4DF35DCA131" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Earnings Per Share, Basic, Other Disclosures [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_EarningsPerShareBasicOtherDisclosuresAbstract" xlink:label="loc_us-gaap_EarningsPerShareBasicOtherDisclosuresAbstract_7273933F3E2C6F61DD23A4DF35DCA131" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareBasicOtherDisclosuresAbstract_7273933F3E2C6F61DD23A4DF35DCA131" xlink:to="lab_us-gaap_EarningsPerShareBasicOtherDisclosuresAbstract_7273933F3E2C6F61DD23A4DF35DCA131" xlink:type="arc" />
    <link:label id="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_7953DD97F9378336375EA4DF35DC6C0C_terseLabel_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_7953DD97F9378336375EA4DF35DC6C0C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Basic</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_7953DD97F9378336375EA4DF35DC6C0C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_7953DD97F9378336375EA4DF35DC6C0C" xlink:to="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_7953DD97F9378336375EA4DF35DC6C0C" xlink:type="arc" />
    <link:label id="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_B6093F45B6750AA91B1AA4DF35DCD1E5_terseLabel_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_B6093F45B6750AA91B1AA4DF35DCD1E5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Diluted</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_B6093F45B6750AA91B1AA4DF35DCD1E5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_B6093F45B6750AA91B1AA4DF35DCD1E5" xlink:to="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_B6093F45B6750AA91B1AA4DF35DCD1E5" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeTaxDisclosureAbstract_5E260732721AAB9F1063A4DF3B33DE73_label_en-US" xlink:label="lab_us-gaap_IncomeTaxDisclosureAbstract_5E260732721AAB9F1063A4DF3B33DE73" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Tax Disclosure [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeTaxDisclosureAbstract" xlink:label="loc_us-gaap_IncomeTaxDisclosureAbstract_5E260732721AAB9F1063A4DF3B33DE73" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_5E260732721AAB9F1063A4DF3B33DE73" xlink:to="lab_us-gaap_IncomeTaxDisclosureAbstract_5E260732721AAB9F1063A4DF3B33DE73" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeTaxDisclosureTextBlock_5905E446B136B4338A70A4DF3B33FB33_verboseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxDisclosureTextBlock_5905E446B136B4338A70A4DF3B33FB33" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">INCOME TAXES</link:label>
    <link:label id="lab_us-gaap_IncomeTaxDisclosureTextBlock_5905E446B136B4338A70A4DF3B33FB33_label_en-US" xlink:label="lab_us-gaap_IncomeTaxDisclosureTextBlock_5905E446B136B4338A70A4DF3B33FB33" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Tax Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeTaxDisclosureTextBlock" xlink:label="loc_us-gaap_IncomeTaxDisclosureTextBlock_5905E446B136B4338A70A4DF3B33FB33" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxDisclosureTextBlock_5905E446B136B4338A70A4DF3B33FB33" xlink:to="lab_us-gaap_IncomeTaxDisclosureTextBlock_5905E446B136B4338A70A4DF3B33FB33" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock_B6DBA6409067629F7A62A4DF3EEA07CA_verboseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock_B6DBA6409067629F7A62A4DF3EEA07CA" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Summary of the Company's available-for-sale investments by category</link:label>
    <link:label id="lab_us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock_B6DBA6409067629F7A62A4DF3EEA07CA_label_en-US" xlink:label="lab_us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock_B6DBA6409067629F7A62A4DF3EEA07CA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Available-for-sale Securities Reconciliation [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock_B6DBA6409067629F7A62A4DF3EEA07CA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock_B6DBA6409067629F7A62A4DF3EEA07CA" xlink:to="lab_us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock_B6DBA6409067629F7A62A4DF3EEA07CA" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfUnrealizedLossOnInvestmentsTableTextBlock_C8CFC5654B3728F4511BA4DF3EEA4070_verboseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfUnrealizedLossOnInvestmentsTableTextBlock_C8CFC5654B3728F4511BA4DF3EEA4070" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Gross unrealized losses and fair value of Company's available-for-sale investments with unrealized losses aggregated by investment category and length of time</link:label>
    <link:label id="lab_us-gaap_ScheduleOfUnrealizedLossOnInvestmentsTableTextBlock_C8CFC5654B3728F4511BA4DF3EEA4070_label_en-US" xlink:label="lab_us-gaap_ScheduleOfUnrealizedLossOnInvestmentsTableTextBlock_C8CFC5654B3728F4511BA4DF3EEA4070" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Unrealized Loss on Investments [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfUnrealizedLossOnInvestmentsTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfUnrealizedLossOnInvestmentsTableTextBlock_C8CFC5654B3728F4511BA4DF3EEA4070" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfUnrealizedLossOnInvestmentsTableTextBlock_C8CFC5654B3728F4511BA4DF3EEA4070" xlink:to="lab_us-gaap_ScheduleOfUnrealizedLossOnInvestmentsTableTextBlock_C8CFC5654B3728F4511BA4DF3EEA4070" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfRealizedGainLossTableTextBlock_FE0F776BF1D41689D6F4A4DF3EEBC097_verboseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfRealizedGainLossTableTextBlock_FE0F776BF1D41689D6F4A4DF3EEBC097" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Proceeds and gross gains and losses from the sale of available-for-sale investments</link:label>
    <link:label id="lab_us-gaap_ScheduleOfRealizedGainLossTableTextBlock_FE0F776BF1D41689D6F4A4DF3EEBC097_label_en-US" xlink:label="lab_us-gaap_ScheduleOfRealizedGainLossTableTextBlock_FE0F776BF1D41689D6F4A4DF3EEBC097" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Realized Gain (Loss) [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfRealizedGainLossTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfRealizedGainLossTableTextBlock_FE0F776BF1D41689D6F4A4DF3EEBC097" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfRealizedGainLossTableTextBlock_FE0F776BF1D41689D6F4A4DF3EEBC097" xlink:to="lab_us-gaap_ScheduleOfRealizedGainLossTableTextBlock_FE0F776BF1D41689D6F4A4DF3EEBC097" xlink:type="arc" />
    <link:label id="lab_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_4E8E4D438B7F320C5CF8A4DF3DAA9ECE_verboseLabel_en-US" xlink:label="lab_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_4E8E4D438B7F320C5CF8A4DF3DAA9ECE" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Employee stock options and restricted stock units which were not included in the computation of diluted shares</link:label>
    <link:label id="lab_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_4E8E4D438B7F320C5CF8A4DF3DAA9ECE_label_en-US" xlink:label="lab_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_4E8E4D438B7F320C5CF8A4DF3DAA9ECE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_4E8E4D438B7F320C5CF8A4DF3DAA9ECE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_4E8E4D438B7F320C5CF8A4DF3DAA9ECE" xlink:to="lab_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_4E8E4D438B7F320C5CF8A4DF3DAA9ECE" xlink:type="arc" />
    <link:label id="lab_pll_RestructuringOtherChargesAxis_220CFAE1CEF253808B46C636F37315F5_terseLabel_en-US" xlink:label="lab_pll_RestructuringOtherChargesAxis_220CFAE1CEF253808B46C636F37315F5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restructuring Other Charges [Axis]</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_RestructuringOtherChargesAxis" xlink:label="loc_pll_RestructuringOtherChargesAxis_220CFAE1CEF253808B46C636F37315F5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_RestructuringOtherChargesAxis_220CFAE1CEF253808B46C636F37315F5" xlink:to="lab_pll_RestructuringOtherChargesAxis_220CFAE1CEF253808B46C636F37315F5" xlink:type="arc" />
    <link:label id="lab_pll_RestructuringOtherChargesDomain_87B8F6CD68E2B405301CC636F37463D8_terseLabel_en-US" xlink:label="lab_pll_RestructuringOtherChargesDomain_87B8F6CD68E2B405301CC636F37463D8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restructuring Other Charges [Domain]</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_RestructuringOtherChargesDomain" xlink:label="loc_pll_RestructuringOtherChargesDomain_87B8F6CD68E2B405301CC636F37463D8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_RestructuringOtherChargesDomain_87B8F6CD68E2B405301CC636F37463D8" xlink:to="lab_pll_RestructuringOtherChargesDomain_87B8F6CD68E2B405301CC636F37463D8" xlink:type="arc" />
    <link:label id="lab_pll_OtherChargesGainsMember_F081676528A1F6DAA284E9E7CDAA3790_terseLabel_en-US" xlink:label="lab_pll_OtherChargesGainsMember_F081676528A1F6DAA284E9E7CDAA3790" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Charges Gains [Member]</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_OtherChargesGainsMember" xlink:label="loc_pll_OtherChargesGainsMember_F081676528A1F6DAA284E9E7CDAA3790" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_OtherChargesGainsMember_F081676528A1F6DAA284E9E7CDAA3790" xlink:to="lab_pll_OtherChargesGainsMember_F081676528A1F6DAA284E9E7CDAA3790" xlink:type="arc" />
    <link:label id="lab_pll_AssetImpairmentChargesAndGainLossOnSaleOfAssets_17A2FB27883DF070FE10C636F3386F8A_negatedLabel_en-US" xlink:label="lab_pll_AssetImpairmentChargesAndGainLossOnSaleOfAssets_17A2FB27883DF070FE10C636F3386F8A" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Asset Impairment Charges and Gain Loss On Sale Of Assets</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_AssetImpairmentChargesAndGainLossOnSaleOfAssets" xlink:label="loc_pll_AssetImpairmentChargesAndGainLossOnSaleOfAssets_17A2FB27883DF070FE10C636F3386F8A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_AssetImpairmentChargesAndGainLossOnSaleOfAssets_17A2FB27883DF070FE10C636F3386F8A" xlink:to="lab_pll_AssetImpairmentChargesAndGainLossOnSaleOfAssets_17A2FB27883DF070FE10C636F3386F8A" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensation_02589A41D1B01582BC01A4DF3B011A77_verboseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensation_02589A41D1B01582BC01A4DF3B011A77" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Non-cash stock compensation</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="loc_us-gaap_ShareBasedCompensation_02589A41D1B01582BC01A4DF3B011A77" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensation_02589A41D1B01582BC01A4DF3B011A77" xlink:to="lab_us-gaap_ShareBasedCompensation_02589A41D1B01582BC01A4DF3B011A77" xlink:type="arc" />
    <link:label id="lab_us-gaap_FairValueDisclosuresTextBlock_66A26525B4986953549EA4DF3DEE239B_verboseLabel_en-US" xlink:label="lab_us-gaap_FairValueDisclosuresTextBlock_66A26525B4986953549EA4DF3DEE239B" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">FAIR VALUE MEASUREMENTS</link:label>
    <link:label id="lab_us-gaap_FairValueDisclosuresTextBlock_66A26525B4986953549EA4DF3DEE239B_label_en-US" xlink:label="lab_us-gaap_FairValueDisclosuresTextBlock_66A26525B4986953549EA4DF3DEE239B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value Disclosures [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FairValueDisclosuresTextBlock" xlink:label="loc_us-gaap_FairValueDisclosuresTextBlock_66A26525B4986953549EA4DF3DEE239B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueDisclosuresTextBlock_66A26525B4986953549EA4DF3DEE239B" xlink:to="lab_us-gaap_FairValueDisclosuresTextBlock_66A26525B4986953549EA4DF3DEE239B" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfCompensationCostForShareBasedPaymentArrangementsAllocationOfShareBasedCompensationCostsByPlanTableTextBlock_23167EB6306CFBE7AD74A4DF3C5ECBE7_verboseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfCompensationCostForShareBasedPaymentArrangementsAllocationOfShareBasedCompensationCostsByPlanTableTextBlock_23167EB6306CFBE7AD74A4DF3C5ECBE7" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Share Based Compensation Components of stock-based compensation expense</link:label>
    <link:label id="lab_us-gaap_ScheduleOfCompensationCostForShareBasedPaymentArrangementsAllocationOfShareBasedCompensationCostsByPlanTableTextBlock_23167EB6306CFBE7AD74A4DF3C5ECBE7_label_en-US" xlink:label="lab_us-gaap_ScheduleOfCompensationCostForShareBasedPaymentArrangementsAllocationOfShareBasedCompensationCostsByPlanTableTextBlock_23167EB6306CFBE7AD74A4DF3C5ECBE7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfCompensationCostForShareBasedPaymentArrangementsAllocationOfShareBasedCompensationCostsByPlanTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfCompensationCostForShareBasedPaymentArrangementsAllocationOfShareBasedCompensationCostsByPlanTableTextBlock_23167EB6306CFBE7AD74A4DF3C5ECBE7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfCompensationCostForShareBasedPaymentArrangementsAllocationOfShareBasedCompensationCostsByPlanTableTextBlock_23167EB6306CFBE7AD74A4DF3C5ECBE7" xlink:to="lab_us-gaap_ScheduleOfCompensationCostForShareBasedPaymentArrangementsAllocationOfShareBasedCompensationCostsByPlanTableTextBlock_23167EB6306CFBE7AD74A4DF3C5ECBE7" xlink:type="arc" />
    <link:label id="lab_us-gaap_EffectiveIncomeTaxRateContinuingOperations_9541377A4492078EC813A4DF3B6E1798_verboseLabel_en-US" xlink:label="lab_us-gaap_EffectiveIncomeTaxRateContinuingOperations_9541377A4492078EC813A4DF3B6E1798" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Effective Income Tax Rate, Continuing Operations</link:label>
    <link:label id="lab_us-gaap_EffectiveIncomeTaxRateContinuingOperations_9541377A4492078EC813A4DF3B6E1798_label_en-US" xlink:label="lab_us-gaap_EffectiveIncomeTaxRateContinuingOperations_9541377A4492078EC813A4DF3B6E1798" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Effective Income Tax Rate, Continuing Operations</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperations" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_9541377A4492078EC813A4DF3B6E1798" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_9541377A4492078EC813A4DF3B6E1798" xlink:to="lab_us-gaap_EffectiveIncomeTaxRateContinuingOperations_9541377A4492078EC813A4DF3B6E1798" xlink:type="arc" />
    <link:label id="lab_us-gaap_UnrecognizedTaxBenefits_E7D7D87B9820ABC1D880A4DF3B6EAD32_verboseLabel_en-US" xlink:label="lab_us-gaap_UnrecognizedTaxBenefits_E7D7D87B9820ABC1D880A4DF3B6EAD32" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Unrecognized Tax Benefits</link:label>
    <link:label id="lab_us-gaap_UnrecognizedTaxBenefits_E7D7D87B9820ABC1D880A4DF3B6EAD32_label_en-US" xlink:label="lab_us-gaap_UnrecognizedTaxBenefits_E7D7D87B9820ABC1D880A4DF3B6EAD32" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unrecognized Tax Benefits</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_UnrecognizedTaxBenefits" xlink:label="loc_us-gaap_UnrecognizedTaxBenefits_E7D7D87B9820ABC1D880A4DF3B6EAD32" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UnrecognizedTaxBenefits_E7D7D87B9820ABC1D880A4DF3B6EAD32" xlink:to="lab_us-gaap_UnrecognizedTaxBenefits_E7D7D87B9820ABC1D880A4DF3B6EAD32" xlink:type="arc" />
    <link:label id="lab_us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecrease_DC882E7EB7693D0ABAC2A4DF3B6E8682_verboseLabel_en-US" xlink:label="lab_us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecrease_DC882E7EB7693D0ABAC2A4DF3B6E8682" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Unrecognized Tax Benefits, Period Increase (Decrease)</link:label>
    <link:label id="lab_us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecrease_DC882E7EB7693D0ABAC2A4DF3B6E8682_label_en-US" xlink:label="lab_us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecrease_DC882E7EB7693D0ABAC2A4DF3B6E8682" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unrecognized Tax Benefits, Period Increase (Decrease)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecrease" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecrease_DC882E7EB7693D0ABAC2A4DF3B6E8682" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecrease_DC882E7EB7693D0ABAC2A4DF3B6E8682" xlink:to="lab_us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecrease_DC882E7EB7693D0ABAC2A4DF3B6E8682" xlink:type="arc" />
    <link:label id="lab_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_BFEFA80F0C4D6ACE0C29A4DF3B6EAD83_verboseLabel_en-US" xlink:label="lab_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_BFEFA80F0C4D6ACE0C29A4DF3B6EAD83" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Unrecognized Tax Benefits that Would Impact Effective Tax Rate</link:label>
    <link:label id="lab_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_BFEFA80F0C4D6ACE0C29A4DF3B6EAD83_label_en-US" xlink:label="lab_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_BFEFA80F0C4D6ACE0C29A4DF3B6EAD83" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unrecognized Tax Benefits that Would Impact Effective Tax Rate</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_BFEFA80F0C4D6ACE0C29A4DF3B6EAD83" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_BFEFA80F0C4D6ACE0C29A4DF3B6EAD83" xlink:to="lab_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_BFEFA80F0C4D6ACE0C29A4DF3B6EAD83" xlink:type="arc" />
    <link:label id="lab_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense_F8D8F836316782F4850CA4DF3B6E7E17_verboseLabel_en-US" xlink:label="lab_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense_F8D8F836316782F4850CA4DF3B6E7E17" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Income Tax Examination, Penalties and Interest Accrued</link:label>
    <link:label id="lab_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense_F8D8F836316782F4850CA4DF3B6E7E17_label_en-US" xlink:label="lab_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense_F8D8F836316782F4850CA4DF3B6E7E17" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense_F8D8F836316782F4850CA4DF3B6E7E17" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense_F8D8F836316782F4850CA4DF3B6E7E17" xlink:to="lab_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense_F8D8F836316782F4850CA4DF3B6E7E17" xlink:type="arc" />
    <link:label id="lab_us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleEstimatedRangeOfChangeLowerBound_1E3394DB33D83D3BBEF0A4DF3B6EFFF0_verboseLabel_en-US" xlink:label="lab_us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleEstimatedRangeOfChangeLowerBound_1E3394DB33D83D3BBEF0A4DF3B6EFFF0" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Lower Bound</link:label>
    <link:label id="lab_us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleEstimatedRangeOfChangeLowerBound_1E3394DB33D83D3BBEF0A4DF3B6EFFF0_label_en-US" xlink:label="lab_us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleEstimatedRangeOfChangeLowerBound_1E3394DB33D83D3BBEF0A4DF3B6EFFF0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Lower Bound</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleEstimatedRangeOfChangeLowerBound" xlink:label="loc_us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleEstimatedRangeOfChangeLowerBound_1E3394DB33D83D3BBEF0A4DF3B6EFFF0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleEstimatedRangeOfChangeLowerBound_1E3394DB33D83D3BBEF0A4DF3B6EFFF0" xlink:to="lab_us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleEstimatedRangeOfChangeLowerBound_1E3394DB33D83D3BBEF0A4DF3B6EFFF0" xlink:type="arc" />
    <link:label id="lab_us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleEstimatedRangeOfChangeUpperBound_6FC182567D5225BAC9CBA4DF3B6EBBAD_verboseLabel_en-US" xlink:label="lab_us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleEstimatedRangeOfChangeUpperBound_6FC182567D5225BAC9CBA4DF3B6EBBAD" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Upper Bound</link:label>
    <link:label id="lab_us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleEstimatedRangeOfChangeUpperBound_6FC182567D5225BAC9CBA4DF3B6EBBAD_label_en-US" xlink:label="lab_us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleEstimatedRangeOfChangeUpperBound_6FC182567D5225BAC9CBA4DF3B6EBBAD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Upper Bound</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleEstimatedRangeOfChangeUpperBound" xlink:label="loc_us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleEstimatedRangeOfChangeUpperBound_6FC182567D5225BAC9CBA4DF3B6EBBAD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleEstimatedRangeOfChangeUpperBound_6FC182567D5225BAC9CBA4DF3B6EBBAD" xlink:to="lab_us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleEstimatedRangeOfChangeUpperBound_6FC182567D5225BAC9CBA4DF3B6EBBAD" xlink:type="arc" />
    <link:label id="lab_pll_IncomeTaxesPayableReclassifiedFromNoncurrentToCurrent_001C87AB22D0698D2DFF8D49B0D8DA82_terseLabel_en-US" xlink:label="lab_pll_IncomeTaxesPayableReclassifiedFromNoncurrentToCurrent_001C87AB22D0698D2DFF8D49B0D8DA82" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income taxes payable reclassified from noncurrent to current</link:label>
    <link:label id="lab_pll_IncomeTaxesPayableReclassifiedFromNoncurrentToCurrent_001C87AB22D0698D2DFF8D49B0D8DA82_label_en-US" xlink:label="lab_pll_IncomeTaxesPayableReclassifiedFromNoncurrentToCurrent_001C87AB22D0698D2DFF8D49B0D8DA82" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income taxes payable reclassified from noncurrent to current</link:label>
    <link:label id="lab_pll_IncomeTaxesPayableReclassifiedFromNoncurrentToCurrent_001C87AB22D0698D2DFF8D49B0D8DA82_documentation_en-US" xlink:label="lab_pll_IncomeTaxesPayableReclassifiedFromNoncurrentToCurrent_001C87AB22D0698D2DFF8D49B0D8DA82" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The amount of income taxes payable reclassified from noncurrent to current during the period.</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_IncomeTaxesPayableReclassifiedFromNoncurrentToCurrent" xlink:label="loc_pll_IncomeTaxesPayableReclassifiedFromNoncurrentToCurrent_001C87AB22D0698D2DFF8D49B0D8DA82" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_IncomeTaxesPayableReclassifiedFromNoncurrentToCurrent_001C87AB22D0698D2DFF8D49B0D8DA82" xlink:to="lab_pll_IncomeTaxesPayableReclassifiedFromNoncurrentToCurrent_001C87AB22D0698D2DFF8D49B0D8DA82" xlink:type="arc" />
    <link:label id="lab_pll_InterestPayableReclassifiedFromNoncurrentToCurrent_8A91465DE1037889DEC48D539A6D8053_terseLabel_en-US" xlink:label="lab_pll_InterestPayableReclassifiedFromNoncurrentToCurrent_8A91465DE1037889DEC48D539A6D8053" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interest payable reclassified from noncurrent to current</link:label>
    <link:label id="lab_pll_InterestPayableReclassifiedFromNoncurrentToCurrent_8A91465DE1037889DEC48D539A6D8053_label_en-US" xlink:label="lab_pll_InterestPayableReclassifiedFromNoncurrentToCurrent_8A91465DE1037889DEC48D539A6D8053" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest payable reclassified from noncurrent to current</link:label>
    <link:label id="lab_pll_InterestPayableReclassifiedFromNoncurrentToCurrent_8A91465DE1037889DEC48D539A6D8053_documentation_en-US" xlink:label="lab_pll_InterestPayableReclassifiedFromNoncurrentToCurrent_8A91465DE1037889DEC48D539A6D8053" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Interest payable reclassified from noncurrent to current during the period.</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_InterestPayableReclassifiedFromNoncurrentToCurrent" xlink:label="loc_pll_InterestPayableReclassifiedFromNoncurrentToCurrent_8A91465DE1037889DEC48D539A6D8053" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_InterestPayableReclassifiedFromNoncurrentToCurrent_8A91465DE1037889DEC48D539A6D8053" xlink:to="lab_pll_InterestPayableReclassifiedFromNoncurrentToCurrent_8A91465DE1037889DEC48D539A6D8053" xlink:type="arc" />
    <link:label id="lab_us-gaap_SubsequentEventTable_392F85C3075BFE2BBF669C9C8AD35940_terseLabel_en-US" xlink:label="lab_us-gaap_SubsequentEventTable_392F85C3075BFE2BBF669C9C8AD35940" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Subsequent Event [Table]</link:label>
    <link:label id="lab_us-gaap_SubsequentEventTable_392F85C3075BFE2BBF669C9C8AD35940_label_en-US" xlink:label="lab_us-gaap_SubsequentEventTable_392F85C3075BFE2BBF669C9C8AD35940" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Subsequent Event [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SubsequentEventTable" xlink:label="loc_us-gaap_SubsequentEventTable_392F85C3075BFE2BBF669C9C8AD35940" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsequentEventTable_392F85C3075BFE2BBF669C9C8AD35940" xlink:to="lab_us-gaap_SubsequentEventTable_392F85C3075BFE2BBF669C9C8AD35940" xlink:type="arc" />
    <link:label id="lab_us-gaap_SubsequentEventTypeAxis_0D2472859422ADCF450E9C9C8AD39047_terseLabel_en-US" xlink:label="lab_us-gaap_SubsequentEventTypeAxis_0D2472859422ADCF450E9C9C8AD39047" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Subsequent Event Type [Axis]</link:label>
    <link:label id="lab_us-gaap_SubsequentEventTypeAxis_0D2472859422ADCF450E9C9C8AD39047_label_en-US" xlink:label="lab_us-gaap_SubsequentEventTypeAxis_0D2472859422ADCF450E9C9C8AD39047" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Subsequent Event Type [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SubsequentEventTypeAxis" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_0D2472859422ADCF450E9C9C8AD39047" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_0D2472859422ADCF450E9C9C8AD39047" xlink:to="lab_us-gaap_SubsequentEventTypeAxis_0D2472859422ADCF450E9C9C8AD39047" xlink:type="arc" />
    <link:label id="lab_us-gaap_SubsequentEventTypeDomain_A1B22E82BFA202E56C059C9C8AD39DD8_terseLabel_en-US" xlink:label="lab_us-gaap_SubsequentEventTypeDomain_A1B22E82BFA202E56C059C9C8AD39DD8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Subsequent Event Type [Domain]</link:label>
    <link:label id="lab_us-gaap_SubsequentEventTypeDomain_A1B22E82BFA202E56C059C9C8AD39DD8_label_en-US" xlink:label="lab_us-gaap_SubsequentEventTypeDomain_A1B22E82BFA202E56C059C9C8AD39DD8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Subsequent Event Type [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SubsequentEventTypeDomain" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_A1B22E82BFA202E56C059C9C8AD39DD8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_A1B22E82BFA202E56C059C9C8AD39DD8" xlink:to="lab_us-gaap_SubsequentEventTypeDomain_A1B22E82BFA202E56C059C9C8AD39DD8" xlink:type="arc" />
    <link:label id="lab_pll_ForteBioMember_C9BBEFB0985F3F35ED82A0D715EE12FA_terseLabel_en-US" xlink:label="lab_pll_ForteBioMember_C9BBEFB0985F3F35ED82A0D715EE12FA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">ForteBio [Member]</link:label>
    <link:label id="lab_pll_ForteBioMember_C9BBEFB0985F3F35ED82A0D715EE12FA_label_en-US" xlink:label="lab_pll_ForteBioMember_C9BBEFB0985F3F35ED82A0D715EE12FA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Forte Bio [Member]</link:label>
    <link:label id="lab_pll_ForteBioMember_C9BBEFB0985F3F35ED82A0D715EE12FA_documentation_en-US" xlink:label="lab_pll_ForteBioMember_C9BBEFB0985F3F35ED82A0D715EE12FA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Forte Bio [Member]</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_ForteBioMember" xlink:label="loc_pll_ForteBioMember_C9BBEFB0985F3F35ED82A0D715EE12FA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_ForteBioMember_C9BBEFB0985F3F35ED82A0D715EE12FA" xlink:to="lab_pll_ForteBioMember_C9BBEFB0985F3F35ED82A0D715EE12FA" xlink:type="arc" />
    <link:label id="lab_us-gaap_SubsequentEventLineItems_A2AECF4E4A74AB0876F89C9C8AF2EEBF_terseLabel_en-US" xlink:label="lab_us-gaap_SubsequentEventLineItems_A2AECF4E4A74AB0876F89C9C8AF2EEBF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Subsequent Event [Line Items]</link:label>
    <link:label id="lab_us-gaap_SubsequentEventLineItems_A2AECF4E4A74AB0876F89C9C8AF2EEBF_label_en-US" xlink:label="lab_us-gaap_SubsequentEventLineItems_A2AECF4E4A74AB0876F89C9C8AF2EEBF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Subsequent Event [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SubsequentEventLineItems" xlink:label="loc_us-gaap_SubsequentEventLineItems_A2AECF4E4A74AB0876F89C9C8AF2EEBF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsequentEventLineItems_A2AECF4E4A74AB0876F89C9C8AF2EEBF" xlink:to="lab_us-gaap_SubsequentEventLineItems_A2AECF4E4A74AB0876F89C9C8AF2EEBF" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_A0CC2FD09B29A28154399C9D8AFE2D28_terseLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_A0CC2FD09B29A28154399C9D8AFE2D28" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Business Acquisition, Cost of Acquired Entity, Purchase Price</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_A0CC2FD09B29A28154399C9D8AFE2D28" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_A0CC2FD09B29A28154399C9D8AFE2D28" xlink:to="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_A0CC2FD09B29A28154399C9D8AFE2D28" xlink:type="arc" />
    <link:label id="lab_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock_A0D230DEFE42F66A93A8A4DF3FAFA38E_verboseLabel_en-US" xlink:label="lab_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock_A0D230DEFE42F66A93A8A4DF3FAFA38E" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES</link:label>
    <link:label id="lab_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock_A0D230DEFE42F66A93A8A4DF3FAFA38E_label_en-US" xlink:label="lab_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock_A0D230DEFE42F66A93A8A4DF3FAFA38E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative Instruments and Hedging Activities Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock" xlink:label="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock_A0D230DEFE42F66A93A8A4DF3FAFA38E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock_A0D230DEFE42F66A93A8A4DF3FAFA38E" xlink:to="lab_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock_A0D230DEFE42F66A93A8A4DF3FAFA38E" xlink:type="arc" />
    <link:label id="lab_us-gaap_TreasuryStockTextBlock_6FB72DFC64213E444E07A4DF39710C4D_verboseLabel_en-US" xlink:label="lab_us-gaap_TreasuryStockTextBlock_6FB72DFC64213E444E07A4DF39710C4D" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">TREASURY STOCK</link:label>
    <link:label id="lab_us-gaap_TreasuryStockTextBlock_6FB72DFC64213E444E07A4DF39710C4D_label_en-US" xlink:label="lab_us-gaap_TreasuryStockTextBlock_6FB72DFC64213E444E07A4DF39710C4D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Treasury Stock [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_TreasuryStockTextBlock" xlink:label="loc_us-gaap_TreasuryStockTextBlock_6FB72DFC64213E444E07A4DF39710C4D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TreasuryStockTextBlock_6FB72DFC64213E444E07A4DF39710C4D" xlink:to="lab_us-gaap_TreasuryStockTextBlock_6FB72DFC64213E444E07A4DF39710C4D" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfGoodwillTable_385C1C531F3B6DE493C6A4DF3910405D_verboseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfGoodwillTable_385C1C531F3B6DE493C6A4DF3910405D" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Goodwill [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfGoodwillTable_385C1C531F3B6DE493C6A4DF3910405D_label_en-US" xlink:label="lab_us-gaap_ScheduleOfGoodwillTable_385C1C531F3B6DE493C6A4DF3910405D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Goodwill [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfGoodwillTable" xlink:label="loc_us-gaap_ScheduleOfGoodwillTable_385C1C531F3B6DE493C6A4DF3910405D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_385C1C531F3B6DE493C6A4DF3910405D" xlink:to="lab_us-gaap_ScheduleOfGoodwillTable_385C1C531F3B6DE493C6A4DF3910405D" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_64A69A8ACA857F71C34FA4DF39110C79_verboseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_64A69A8ACA857F71C34FA4DF39110C79" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets by Major Class [Axis]</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_64A69A8ACA857F71C34FA4DF39110C79_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_64A69A8ACA857F71C34FA4DF39110C79" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets by Major Class [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_64A69A8ACA857F71C34FA4DF39110C79" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_64A69A8ACA857F71C34FA4DF39110C79" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_64A69A8ACA857F71C34FA4DF39110C79" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_A18BD1D1D668C4E1E4DEA4DF3911C42B_verboseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_A18BD1D1D668C4E1E4DEA4DF3911C42B" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Major Class Name [Domain]</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_A18BD1D1D668C4E1E4DEA4DF3911C42B_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_A18BD1D1D668C4E1E4DEA4DF3911C42B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Major Class Name [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_A18BD1D1D668C4E1E4DEA4DF3911C42B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_A18BD1D1D668C4E1E4DEA4DF3911C42B" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_A18BD1D1D668C4E1E4DEA4DF3911C42B" xlink:type="arc" />
    <link:label id="lab_pll_PatentsAndUnpatentedTechnologyMember_140F401BBC2108E3CFCCA4DF39112E96_terseLabel_en-US" xlink:label="lab_pll_PatentsAndUnpatentedTechnologyMember_140F401BBC2108E3CFCCA4DF39112E96" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Patents and unpatented technology [Member]</link:label>
    <link:label id="lab_pll_PatentsAndUnpatentedTechnologyMember_140F401BBC2108E3CFCCA4DF39112E96_label_en-US" xlink:label="lab_pll_PatentsAndUnpatentedTechnologyMember_140F401BBC2108E3CFCCA4DF39112E96" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Patents and Unpatented Technology [Member]</link:label>
    <link:label id="lab_pll_PatentsAndUnpatentedTechnologyMember_140F401BBC2108E3CFCCA4DF39112E96_documentation_en-US" xlink:label="lab_pll_PatentsAndUnpatentedTechnologyMember_140F401BBC2108E3CFCCA4DF39112E96" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Patents and Unpatented Technology.</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_PatentsAndUnpatentedTechnologyMember" xlink:label="loc_pll_PatentsAndUnpatentedTechnologyMember_140F401BBC2108E3CFCCA4DF39112E96" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_PatentsAndUnpatentedTechnologyMember_140F401BBC2108E3CFCCA4DF39112E96" xlink:to="lab_pll_PatentsAndUnpatentedTechnologyMember_140F401BBC2108E3CFCCA4DF39112E96" xlink:type="arc" />
    <link:label id="lab_us-gaap_CustomerRelationshipsMember_20B95922FBB10EA9DCA8A4DF3911DFC5_terseLabel_en-US" xlink:label="lab_us-gaap_CustomerRelationshipsMember_20B95922FBB10EA9DCA8A4DF3911DFC5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Customer-related intangibles [Member]</link:label>
    <link:label id="lab_us-gaap_CustomerRelationshipsMember_20B95922FBB10EA9DCA8A4DF3911DFC5_label_en-US" xlink:label="lab_us-gaap_CustomerRelationshipsMember_20B95922FBB10EA9DCA8A4DF3911DFC5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Customer Relationships [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CustomerRelationshipsMember" xlink:label="loc_us-gaap_CustomerRelationshipsMember_20B95922FBB10EA9DCA8A4DF3911DFC5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CustomerRelationshipsMember_20B95922FBB10EA9DCA8A4DF3911DFC5" xlink:to="lab_us-gaap_CustomerRelationshipsMember_20B95922FBB10EA9DCA8A4DF3911DFC5" xlink:type="arc" />
    <link:label id="lab_us-gaap_TrademarksMember_92C1C26A9506A50408B6A4DF39114672_terseLabel_en-US" xlink:label="lab_us-gaap_TrademarksMember_92C1C26A9506A50408B6A4DF39114672" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Trademarks [Member]</link:label>
    <link:label id="lab_us-gaap_TrademarksMember_92C1C26A9506A50408B6A4DF39114672_label_en-US" xlink:label="lab_us-gaap_TrademarksMember_92C1C26A9506A50408B6A4DF39114672" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Trademarks [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_TrademarksMember" xlink:label="loc_us-gaap_TrademarksMember_92C1C26A9506A50408B6A4DF39114672" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TrademarksMember_92C1C26A9506A50408B6A4DF39114672" xlink:to="lab_us-gaap_TrademarksMember_92C1C26A9506A50408B6A4DF39114672" xlink:type="arc" />
    <link:label id="lab_pll_OtherFiniteLivedIntangibleAssetsMember_504926ED67666B332EF4A4DF39119FF6_terseLabel_en-US" xlink:label="lab_pll_OtherFiniteLivedIntangibleAssetsMember_504926ED67666B332EF4A4DF39119FF6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other [Member]</link:label>
    <link:label id="lab_pll_OtherFiniteLivedIntangibleAssetsMember_504926ED67666B332EF4A4DF39119FF6_label_en-US" xlink:label="lab_pll_OtherFiniteLivedIntangibleAssetsMember_504926ED67666B332EF4A4DF39119FF6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Finite Lived Intangible Assets [Member]</link:label>
    <link:label id="lab_pll_OtherFiniteLivedIntangibleAssetsMember_504926ED67666B332EF4A4DF39119FF6_documentation_en-US" xlink:label="lab_pll_OtherFiniteLivedIntangibleAssetsMember_504926ED67666B332EF4A4DF39119FF6" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Finite Lived Intangible Assets.</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_OtherFiniteLivedIntangibleAssetsMember" xlink:label="loc_pll_OtherFiniteLivedIntangibleAssetsMember_504926ED67666B332EF4A4DF39119FF6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_OtherFiniteLivedIntangibleAssetsMember_504926ED67666B332EF4A4DF39119FF6" xlink:to="lab_pll_OtherFiniteLivedIntangibleAssetsMember_504926ED67666B332EF4A4DF39119FF6" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillLineItems_8E6A9355F0836C96E519A4DF39114754_verboseLabel_en-US" xlink:label="lab_us-gaap_GoodwillLineItems_8E6A9355F0836C96E519A4DF39114754" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Goodwill [Line Items]</link:label>
    <link:label id="lab_us-gaap_GoodwillLineItems_8E6A9355F0836C96E519A4DF39114754_label_en-US" xlink:label="lab_us-gaap_GoodwillLineItems_8E6A9355F0836C96E519A4DF39114754" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_GoodwillLineItems" xlink:label="loc_us-gaap_GoodwillLineItems_8E6A9355F0836C96E519A4DF39114754" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillLineItems_8E6A9355F0836C96E519A4DF39114754" xlink:to="lab_us-gaap_GoodwillLineItems_8E6A9355F0836C96E519A4DF39114754" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsGross_AD52CBAE8D79D132DF7BA4DF3911CBE5_verboseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsGross_AD52CBAE8D79D132DF7BA4DF3911CBE5" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Gross</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsGross_AD52CBAE8D79D132DF7BA4DF3911CBE5_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsGross_AD52CBAE8D79D132DF7BA4DF3911CBE5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_AD52CBAE8D79D132DF7BA4DF3911CBE5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsGross_AD52CBAE8D79D132DF7BA4DF3911CBE5" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsGross_AD52CBAE8D79D132DF7BA4DF3911CBE5" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_3A52CE12D76B21EE28F1A4DF3911F545_verboseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_3A52CE12D76B21EE28F1A4DF3911F545" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Accumulated Amortization</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_3A52CE12D76B21EE28F1A4DF3911F545_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_3A52CE12D76B21EE28F1A4DF3911F545" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Accumulated Amortization</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_3A52CE12D76B21EE28F1A4DF3911F545" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_3A52CE12D76B21EE28F1A4DF3911F545" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_3A52CE12D76B21EE28F1A4DF3911F545" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsNet_AD079643DC1319336D91A4DF39116804_totalLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsNet_AD079643DC1319336D91A4DF39116804" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_AD079643DC1319336D91A4DF39116804" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_AD079643DC1319336D91A4DF39116804" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsNet_AD079643DC1319336D91A4DF39116804" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_6E95034E3C204D7BB370A4DF3ACDCCCE_verboseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_6E95034E3C204D7BB370A4DF3ACDCCCE" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Restructuring and Related Costs [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_6E95034E3C204D7BB370A4DF3ACDCCCE_label_en-US" xlink:label="lab_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_6E95034E3C204D7BB370A4DF3ACDCCCE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Restructuring and Related Costs [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_6E95034E3C204D7BB370A4DF3ACDCCCE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_6E95034E3C204D7BB370A4DF3ACDCCCE" xlink:to="lab_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_6E95034E3C204D7BB370A4DF3ACDCCCE" xlink:type="arc" />
    <link:label id="lab_us-gaap_RestructuringCostAndReserveAxis_52629808817950AC563DA4DF3ACD4F79_verboseLabel_en-US" xlink:label="lab_us-gaap_RestructuringCostAndReserveAxis_52629808817950AC563DA4DF3ACD4F79" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Restructuring Cost and Reserve [Axis]</link:label>
    <link:label id="lab_us-gaap_RestructuringCostAndReserveAxis_52629808817950AC563DA4DF3ACD4F79_label_en-US" xlink:label="lab_us-gaap_RestructuringCostAndReserveAxis_52629808817950AC563DA4DF3ACD4F79" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restructuring Cost and Reserve [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_RestructuringCostAndReserveAxis" xlink:label="loc_us-gaap_RestructuringCostAndReserveAxis_52629808817950AC563DA4DF3ACD4F79" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_52629808817950AC563DA4DF3ACD4F79" xlink:to="lab_us-gaap_RestructuringCostAndReserveAxis_52629808817950AC563DA4DF3ACD4F79" xlink:type="arc" />
    <link:label id="lab_us-gaap_TypeOfRestructuringDomain_AE5A8C124B658A051F6EA4DF3ACD8B8E_verboseLabel_en-US" xlink:label="lab_us-gaap_TypeOfRestructuringDomain_AE5A8C124B658A051F6EA4DF3ACD8B8E" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Type of Restructuring [Domain]</link:label>
    <link:label id="lab_us-gaap_TypeOfRestructuringDomain_AE5A8C124B658A051F6EA4DF3ACD8B8E_label_en-US" xlink:label="lab_us-gaap_TypeOfRestructuringDomain_AE5A8C124B658A051F6EA4DF3ACD8B8E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Type of Restructuring [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_TypeOfRestructuringDomain" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_AE5A8C124B658A051F6EA4DF3ACD8B8E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_AE5A8C124B658A051F6EA4DF3ACD8B8E" xlink:to="lab_us-gaap_TypeOfRestructuringDomain_AE5A8C124B658A051F6EA4DF3ACD8B8E" xlink:type="arc" />
    <link:label id="lab_us-gaap_EmployeeSeveranceMember_1607597D7F678A95FA9AA4DF3ACDEEBE_verboseLabel_en-US" xlink:label="lab_us-gaap_EmployeeSeveranceMember_1607597D7F678A95FA9AA4DF3ACDEEBE" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Severance [Member]</link:label>
    <link:label id="lab_us-gaap_EmployeeSeveranceMember_1607597D7F678A95FA9AA4DF3ACDEEBE_label_en-US" xlink:label="lab_us-gaap_EmployeeSeveranceMember_1607597D7F678A95FA9AA4DF3ACDEEBE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Employee Severance [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_EmployeeSeveranceMember" xlink:label="loc_us-gaap_EmployeeSeveranceMember_1607597D7F678A95FA9AA4DF3ACDEEBE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EmployeeSeveranceMember_1607597D7F678A95FA9AA4DF3ACDEEBE" xlink:to="lab_us-gaap_EmployeeSeveranceMember_1607597D7F678A95FA9AA4DF3ACDEEBE" xlink:type="arc" />
    <link:label id="lab_us-gaap_ContractTerminationMember_996599C7CE9DDC5DBEEBA4DF3ACDE8EE_verboseLabel_en-US" xlink:label="lab_us-gaap_ContractTerminationMember_996599C7CE9DDC5DBEEBA4DF3ACDE8EE" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Other [Member]</link:label>
    <link:label id="lab_us-gaap_ContractTerminationMember_996599C7CE9DDC5DBEEBA4DF3ACDE8EE_label_en-US" xlink:label="lab_us-gaap_ContractTerminationMember_996599C7CE9DDC5DBEEBA4DF3ACDE8EE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contract Termination [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ContractTerminationMember" xlink:label="loc_us-gaap_ContractTerminationMember_996599C7CE9DDC5DBEEBA4DF3ACDE8EE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ContractTerminationMember_996599C7CE9DDC5DBEEBA4DF3ACDE8EE" xlink:to="lab_us-gaap_ContractTerminationMember_996599C7CE9DDC5DBEEBA4DF3ACDE8EE" xlink:type="arc" />
    <link:label id="lab_pll_RestructuringChargesAxis_58059E391383E4B27C31A4DF3ACDB31D_verboseLabel_en-US" xlink:label="lab_pll_RestructuringChargesAxis_58059E391383E4B27C31A4DF3ACDB31D" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Restructuring Charges [Axis]</link:label>
    <link:label id="lab_pll_RestructuringChargesAxis_58059E391383E4B27C31A4DF3ACDB31D_label_en-US" xlink:label="lab_pll_RestructuringChargesAxis_58059E391383E4B27C31A4DF3ACDB31D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restructuring Charges [Axis]</link:label>
    <link:label id="lab_pll_RestructuringChargesAxis_58059E391383E4B27C31A4DF3ACDB31D_documentation_en-US" xlink:label="lab_pll_RestructuringChargesAxis_58059E391383E4B27C31A4DF3ACDB31D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Restructuring Charges [Axis]</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_RestructuringChargesAxis" xlink:label="loc_pll_RestructuringChargesAxis_58059E391383E4B27C31A4DF3ACDB31D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_RestructuringChargesAxis_58059E391383E4B27C31A4DF3ACDB31D" xlink:to="lab_pll_RestructuringChargesAxis_58059E391383E4B27C31A4DF3ACDB31D" xlink:type="arc" />
    <link:label id="lab_pll_RestructuringChargesDomain_77907C8BE1C730D6A4DBA4DF3ACD7598_verboseLabel_en-US" xlink:label="lab_pll_RestructuringChargesDomain_77907C8BE1C730D6A4DBA4DF3ACD7598" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Restructuring Charges [Domain]</link:label>
    <link:label id="lab_pll_RestructuringChargesDomain_77907C8BE1C730D6A4DBA4DF3ACD7598_label_en-US" xlink:label="lab_pll_RestructuringChargesDomain_77907C8BE1C730D6A4DBA4DF3ACD7598" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restructuring Charges [Domain]</link:label>
    <link:label id="lab_pll_RestructuringChargesDomain_77907C8BE1C730D6A4DBA4DF3ACD7598_documentation_en-US" xlink:label="lab_pll_RestructuringChargesDomain_77907C8BE1C730D6A4DBA4DF3ACD7598" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Restructuring Charges [Domain]</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_RestructuringChargesDomain" xlink:label="loc_pll_RestructuringChargesDomain_77907C8BE1C730D6A4DBA4DF3ACD7598" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_RestructuringChargesDomain_77907C8BE1C730D6A4DBA4DF3ACD7598" xlink:to="lab_pll_RestructuringChargesDomain_77907C8BE1C730D6A4DBA4DF3ACD7598" xlink:type="arc" />
    <link:label id="lab_pll_RestructuringLiabilty2012Member_F1824BD442E1E6BC2525ED92E7DF4D98_terseLabel_en-US" xlink:label="lab_pll_RestructuringLiabilty2012Member_F1824BD442E1E6BC2525ED92E7DF4D98" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restructuring Liabilty 2012 [Member]</link:label>
    <link:label id="lab_pll_RestructuringLiabilty2012Member_F1824BD442E1E6BC2525ED92E7DF4D98_label_en-US" xlink:label="lab_pll_RestructuringLiabilty2012Member_F1824BD442E1E6BC2525ED92E7DF4D98" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restructuring Liabilty 2012 [Member]</link:label>
    <link:label id="lab_pll_RestructuringLiabilty2012Member_F1824BD442E1E6BC2525ED92E7DF4D98_documentation_en-US" xlink:label="lab_pll_RestructuringLiabilty2012Member_F1824BD442E1E6BC2525ED92E7DF4D98" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Restructuring Liabilty 2012 [Member]</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_RestructuringLiabilty2012Member" xlink:label="loc_pll_RestructuringLiabilty2012Member_F1824BD442E1E6BC2525ED92E7DF4D98" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_RestructuringLiabilty2012Member_F1824BD442E1E6BC2525ED92E7DF4D98" xlink:to="lab_pll_RestructuringLiabilty2012Member_F1824BD442E1E6BC2525ED92E7DF4D98" xlink:type="arc" />
    <link:label id="lab_pll_RestructuringLiabilty2011Member_770732D0B69FABB201CAA4DF3ACD74EC_terseLabel_en-US" xlink:label="lab_pll_RestructuringLiabilty2011Member_770732D0B69FABB201CAA4DF3ACD74EC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restructuring Liabilty 2011 [Member]</link:label>
    <link:label id="lab_pll_RestructuringLiabilty2011Member_770732D0B69FABB201CAA4DF3ACD74EC_label_en-US" xlink:label="lab_pll_RestructuringLiabilty2011Member_770732D0B69FABB201CAA4DF3ACD74EC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restructuring Liabilty 2011 [Member]</link:label>
    <link:label id="lab_pll_RestructuringLiabilty2011Member_770732D0B69FABB201CAA4DF3ACD74EC_documentation_en-US" xlink:label="lab_pll_RestructuringLiabilty2011Member_770732D0B69FABB201CAA4DF3ACD74EC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Restructuring Liabilty 2011 [Member]</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_RestructuringLiabilty2011Member" xlink:label="loc_pll_RestructuringLiabilty2011Member_770732D0B69FABB201CAA4DF3ACD74EC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_RestructuringLiabilty2011Member_770732D0B69FABB201CAA4DF3ACD74EC" xlink:to="lab_pll_RestructuringLiabilty2011Member_770732D0B69FABB201CAA4DF3ACD74EC" xlink:type="arc" />
    <link:label id="lab_pll_RestructuringLiabilty2010Member_0E326D577FCE5DF18ABBA4DF3ACDF205_terseLabel_en-US" xlink:label="lab_pll_RestructuringLiabilty2010Member_0E326D577FCE5DF18ABBA4DF3ACDF205" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restructuring Liabilty 2010 [Member]</link:label>
    <link:label id="lab_pll_RestructuringLiabilty2010Member_0E326D577FCE5DF18ABBA4DF3ACDF205_label_en-US" xlink:label="lab_pll_RestructuringLiabilty2010Member_0E326D577FCE5DF18ABBA4DF3ACDF205" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restructuring Liabilty 2010 [Member]</link:label>
    <link:label id="lab_pll_RestructuringLiabilty2010Member_0E326D577FCE5DF18ABBA4DF3ACDF205_documentation_en-US" xlink:label="lab_pll_RestructuringLiabilty2010Member_0E326D577FCE5DF18ABBA4DF3ACDF205" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Restructuring Liabilty 2010 [Member]</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_RestructuringLiabilty2010Member" xlink:label="loc_pll_RestructuringLiabilty2010Member_0E326D577FCE5DF18ABBA4DF3ACDF205" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_RestructuringLiabilty2010Member_0E326D577FCE5DF18ABBA4DF3ACDF205" xlink:to="lab_pll_RestructuringLiabilty2010Member_0E326D577FCE5DF18ABBA4DF3ACDF205" xlink:type="arc" />
    <link:label id="lab_pll_RestructuringLiabilty2009Member_DCA7B27EACA35E1B5752A4DF3ACD4427_terseLabel_en-US" xlink:label="lab_pll_RestructuringLiabilty2009Member_DCA7B27EACA35E1B5752A4DF3ACD4427" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restructuring Liabilty 2009 [Member]</link:label>
    <link:label id="lab_pll_RestructuringLiabilty2009Member_DCA7B27EACA35E1B5752A4DF3ACD4427_label_en-US" xlink:label="lab_pll_RestructuringLiabilty2009Member_DCA7B27EACA35E1B5752A4DF3ACD4427" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restructuring Liabilty 2009 [Member]</link:label>
    <link:label id="lab_pll_RestructuringLiabilty2009Member_DCA7B27EACA35E1B5752A4DF3ACD4427_documentation_en-US" xlink:label="lab_pll_RestructuringLiabilty2009Member_DCA7B27EACA35E1B5752A4DF3ACD4427" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Restructuring Liabilty 2009 [Member]</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_RestructuringLiabilty2009Member" xlink:label="loc_pll_RestructuringLiabilty2009Member_DCA7B27EACA35E1B5752A4DF3ACD4427" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_RestructuringLiabilty2009Member_DCA7B27EACA35E1B5752A4DF3ACD4427" xlink:to="lab_pll_RestructuringLiabilty2009Member_DCA7B27EACA35E1B5752A4DF3ACD4427" xlink:type="arc" />
    <link:label id="lab_us-gaap_RestructuringCostAndReserveLineItems_12B012638F6B871486D4A4DF3ACD918C_verboseLabel_en-US" xlink:label="lab_us-gaap_RestructuringCostAndReserveLineItems_12B012638F6B871486D4A4DF3ACD918C" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Restructuring Cost and Reserve [Line Items]</link:label>
    <link:label id="lab_us-gaap_RestructuringCostAndReserveLineItems_12B012638F6B871486D4A4DF3ACD918C_label_en-US" xlink:label="lab_us-gaap_RestructuringCostAndReserveLineItems_12B012638F6B871486D4A4DF3ACD918C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restructuring Cost and Reserve [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_RestructuringCostAndReserveLineItems" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_12B012638F6B871486D4A4DF3ACD918C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_12B012638F6B871486D4A4DF3ACD918C" xlink:to="lab_us-gaap_RestructuringCostAndReserveLineItems_12B012638F6B871486D4A4DF3ACD918C" xlink:type="arc" />
    <link:label id="lab_us-gaap_RestructuringReservePeriodExpense_8C33DAD9227559BED3DDCA8FEEE9BE1F_terseLabel_en-US" xlink:label="lab_us-gaap_RestructuringReservePeriodExpense_8C33DAD9227559BED3DDCA8FEEE9BE1F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Original charge</link:label>
    <link:label id="lab_us-gaap_RestructuringReservePeriodExpense_8C33DAD9227559BED3DDCA8FEEE9BE1F_label_en-US" xlink:label="lab_us-gaap_RestructuringReservePeriodExpense_8C33DAD9227559BED3DDCA8FEEE9BE1F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restructuring Reserve, Period Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_RestructuringReservePeriodExpense" xlink:label="loc_us-gaap_RestructuringReservePeriodExpense_8C33DAD9227559BED3DDCA8FEEE9BE1F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestructuringReservePeriodExpense_8C33DAD9227559BED3DDCA8FEEE9BE1F" xlink:to="lab_us-gaap_RestructuringReservePeriodExpense_8C33DAD9227559BED3DDCA8FEEE9BE1F" xlink:type="arc" />
    <link:label id="lab_pll_RestructuringReserveUtilizedDuringPeriod_1C869035D07C0BB1EC51A4DF3ACD051A_negatedLabel_en-US" xlink:label="lab_pll_RestructuringReserveUtilizedDuringPeriod_1C869035D07C0BB1EC51A4DF3ACD051A" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Utilized</link:label>
    <link:label id="lab_pll_RestructuringReserveUtilizedDuringPeriod_1C869035D07C0BB1EC51A4DF3ACD051A_label_en-US" xlink:label="lab_pll_RestructuringReserveUtilizedDuringPeriod_1C869035D07C0BB1EC51A4DF3ACD051A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restructuring Reserve Utilized During Period</link:label>
    <link:label id="lab_pll_RestructuringReserveUtilizedDuringPeriod_1C869035D07C0BB1EC51A4DF3ACD051A_documentation_en-US" xlink:label="lab_pll_RestructuringReserveUtilizedDuringPeriod_1C869035D07C0BB1EC51A4DF3ACD051A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Restructuring reserve utilized during the period through settlement either by cash or other than cash.</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_RestructuringReserveUtilizedDuringPeriod" xlink:label="loc_pll_RestructuringReserveUtilizedDuringPeriod_1C869035D07C0BB1EC51A4DF3ACD051A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_RestructuringReserveUtilizedDuringPeriod_1C869035D07C0BB1EC51A4DF3ACD051A" xlink:to="lab_pll_RestructuringReserveUtilizedDuringPeriod_1C869035D07C0BB1EC51A4DF3ACD051A" xlink:type="arc" />
    <link:label id="lab_us-gaap_RestructuringReserveAccrualAdjustment_317B5539C2DF22DAAF60A4DF3ACDAE0B_verboseLabel_en-US" xlink:label="lab_us-gaap_RestructuringReserveAccrualAdjustment_317B5539C2DF22DAAF60A4DF3ACDAE0B" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Reversal of excess reserves</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_RestructuringReserveAccrualAdjustment" xlink:label="loc_us-gaap_RestructuringReserveAccrualAdjustment_317B5539C2DF22DAAF60A4DF3ACDAE0B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestructuringReserveAccrualAdjustment_317B5539C2DF22DAAF60A4DF3ACDAE0B" xlink:to="lab_us-gaap_RestructuringReserveAccrualAdjustment_317B5539C2DF22DAAF60A4DF3ACDAE0B" xlink:type="arc" />
    <link:label id="lab_us-gaap_RestructuringReserveTranslationAdjustment_4A6CE25239F9333E7E40A4DF3ACDF7A8_verboseLabel_en-US" xlink:label="lab_us-gaap_RestructuringReserveTranslationAdjustment_4A6CE25239F9333E7E40A4DF3ACDF7A8" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Translation</link:label>
    <link:label id="lab_us-gaap_RestructuringReserveTranslationAdjustment_4A6CE25239F9333E7E40A4DF3ACDF7A8_label_en-US" xlink:label="lab_us-gaap_RestructuringReserveTranslationAdjustment_4A6CE25239F9333E7E40A4DF3ACDF7A8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restructuring Reserve, Translation Adjustment</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_RestructuringReserveTranslationAdjustment" xlink:label="loc_us-gaap_RestructuringReserveTranslationAdjustment_4A6CE25239F9333E7E40A4DF3ACDF7A8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestructuringReserveTranslationAdjustment_4A6CE25239F9333E7E40A4DF3ACDF7A8" xlink:to="lab_us-gaap_RestructuringReserveTranslationAdjustment_4A6CE25239F9333E7E40A4DF3ACDF7A8" xlink:type="arc" />
    <link:label id="lab_us-gaap_RestructuringReserve_7497512FAEB0A28D55A6A4DF3ACDE65D_periodEndLabel_en-US" xlink:label="lab_us-gaap_RestructuringReserve_7497512FAEB0A28D55A6A4DF3ACDE65D" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Balance</link:label>
    <link:label id="lab_us-gaap_RestructuringReserve_7497512FAEB0A28D55A6A4DF3ACDE65D_label_en-US" xlink:label="lab_us-gaap_RestructuringReserve_7497512FAEB0A28D55A6A4DF3ACDE65D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restructuring Reserve</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_RestructuringReserve" xlink:label="loc_us-gaap_RestructuringReserve_7497512FAEB0A28D55A6A4DF3ACDE65D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestructuringReserve_7497512FAEB0A28D55A6A4DF3ACDE65D" xlink:to="lab_us-gaap_RestructuringReserve_7497512FAEB0A28D55A6A4DF3ACDE65D" xlink:type="arc" />
    <link:label id="lab_us-gaap_SupplementalBalanceSheetDisclosuresTextBlock_9B6D10979A13D33573FDA4DF36CC22A8_verboseLabel_en-US" xlink:label="lab_us-gaap_SupplementalBalanceSheetDisclosuresTextBlock_9B6D10979A13D33573FDA4DF36CC22A8" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">BALANCE SHEET DETAILS</link:label>
    <link:label id="lab_us-gaap_SupplementalBalanceSheetDisclosuresTextBlock_9B6D10979A13D33573FDA4DF36CC22A8_label_en-US" xlink:label="lab_us-gaap_SupplementalBalanceSheetDisclosuresTextBlock_9B6D10979A13D33573FDA4DF36CC22A8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Supplemental Balance Sheet Disclosures [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SupplementalBalanceSheetDisclosuresTextBlock" xlink:label="loc_us-gaap_SupplementalBalanceSheetDisclosuresTextBlock_9B6D10979A13D33573FDA4DF36CC22A8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SupplementalBalanceSheetDisclosuresTextBlock_9B6D10979A13D33573FDA4DF36CC22A8" xlink:to="lab_us-gaap_SupplementalBalanceSheetDisclosuresTextBlock_9B6D10979A13D33573FDA4DF36CC22A8" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_5F1A9FA34C9044363E06A4DF425D227D_verboseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_5F1A9FA34C9044363E06A4DF425D227D" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Segment Reporting Information, by Segment [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_5F1A9FA34C9044363E06A4DF425D227D_label_en-US" xlink:label="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_5F1A9FA34C9044363E06A4DF425D227D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Segment Reporting Information, by Segment [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_5F1A9FA34C9044363E06A4DF425D227D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_5F1A9FA34C9044363E06A4DF425D227D" xlink:to="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_5F1A9FA34C9044363E06A4DF425D227D" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingSegmentsMember_6EDFC43A4D65072B153F791BA32927C0_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingSegmentsMember_6EDFC43A4D65072B153F791BA32927C0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating Segments [Member]</link:label>
    <link:label id="lab_us-gaap_OperatingSegmentsMember_6EDFC43A4D65072B153F791BA32927C0_label_en-US" xlink:label="lab_us-gaap_OperatingSegmentsMember_6EDFC43A4D65072B153F791BA32927C0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Segments [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="loc_us-gaap_OperatingSegmentsMember_6EDFC43A4D65072B153F791BA32927C0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingSegmentsMember_6EDFC43A4D65072B153F791BA32927C0" xlink:to="lab_us-gaap_OperatingSegmentsMember_6EDFC43A4D65072B153F791BA32927C0" xlink:type="arc" />
    <link:label id="lab_us-gaap_MaterialReconcilingItemsMember_46ACC9091894F5178F2D791C706AB4B4_terseLabel_en-US" xlink:label="lab_us-gaap_MaterialReconcilingItemsMember_46ACC9091894F5178F2D791C706AB4B4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Significant Reconciling Items [Member]</link:label>
    <link:label id="lab_us-gaap_MaterialReconcilingItemsMember_46ACC9091894F5178F2D791C706AB4B4_label_en-US" xlink:label="lab_us-gaap_MaterialReconcilingItemsMember_46ACC9091894F5178F2D791C706AB4B4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Significant Reconciling Items [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_MaterialReconcilingItemsMember" xlink:label="loc_us-gaap_MaterialReconcilingItemsMember_46ACC9091894F5178F2D791C706AB4B4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MaterialReconcilingItemsMember_46ACC9091894F5178F2D791C706AB4B4" xlink:to="lab_us-gaap_MaterialReconcilingItemsMember_46ACC9091894F5178F2D791C706AB4B4" xlink:type="arc" />
    <link:label id="lab_pll_CorporateServicesGroupMember_34FB08E09C1441C0D077791AB18E83FB_terseLabel_en-US" xlink:label="lab_pll_CorporateServicesGroupMember_34FB08E09C1441C0D077791AB18E83FB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Corporate Services Group [Member]</link:label>
    <link:label id="lab_pll_CorporateServicesGroupMember_34FB08E09C1441C0D077791AB18E83FB_label_en-US" xlink:label="lab_pll_CorporateServicesGroupMember_34FB08E09C1441C0D077791AB18E83FB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Corporate Services Group [Member]</link:label>
    <link:label id="lab_pll_CorporateServicesGroupMember_34FB08E09C1441C0D077791AB18E83FB_documentation_en-US" xlink:label="lab_pll_CorporateServicesGroupMember_34FB08E09C1441C0D077791AB18E83FB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Corporate Services Group [Member]</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_CorporateServicesGroupMember" xlink:label="loc_pll_CorporateServicesGroupMember_34FB08E09C1441C0D077791AB18E83FB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_CorporateServicesGroupMember_34FB08E09C1441C0D077791AB18E83FB" xlink:to="lab_pll_CorporateServicesGroupMember_34FB08E09C1441C0D077791AB18E83FB" xlink:type="arc" />
    <link:label id="lab_us-gaap_SegmentReportingInformationLineItems_8D9EE1D9C504FFA0B0C8A4DF425D4829_verboseLabel_en-US" xlink:label="lab_us-gaap_SegmentReportingInformationLineItems_8D9EE1D9C504FFA0B0C8A4DF425D4829" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Segment Reporting Information [Line Items]</link:label>
    <link:label id="lab_us-gaap_SegmentReportingInformationLineItems_8D9EE1D9C504FFA0B0C8A4DF425D4829_label_en-US" xlink:label="lab_us-gaap_SegmentReportingInformationLineItems_8D9EE1D9C504FFA0B0C8A4DF425D4829" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segment Reporting Information [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_8D9EE1D9C504FFA0B0C8A4DF425D4829" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_8D9EE1D9C504FFA0B0C8A4DF425D4829" xlink:to="lab_us-gaap_SegmentReportingInformationLineItems_8D9EE1D9C504FFA0B0C8A4DF425D4829" xlink:type="arc" />
    <link:label id="lab_us-gaap_SegmentReportingInformationRevenueAbstract_D43020BEA894CE9D76EDA4DF425D53EA_verboseLabel_en-US" xlink:label="lab_us-gaap_SegmentReportingInformationRevenueAbstract_D43020BEA894CE9D76EDA4DF425D53EA" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">SALES:</link:label>
    <link:label id="lab_us-gaap_SegmentReportingInformationRevenueAbstract_D43020BEA894CE9D76EDA4DF425D53EA_label_en-US" xlink:label="lab_us-gaap_SegmentReportingInformationRevenueAbstract_D43020BEA894CE9D76EDA4DF425D53EA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segment Reporting Information, Revenue for Reportable Segment [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SegmentReportingInformationRevenueAbstract" xlink:label="loc_us-gaap_SegmentReportingInformationRevenueAbstract_D43020BEA894CE9D76EDA4DF425D53EA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SegmentReportingInformationRevenueAbstract_D43020BEA894CE9D76EDA4DF425D53EA" xlink:to="lab_us-gaap_SegmentReportingInformationRevenueAbstract_D43020BEA894CE9D76EDA4DF425D53EA" xlink:type="arc" />
    <link:label id="lab_us-gaap_SegmentReportingInformationOperatingIncomeLossAbstract_9DC762E16D6D7C9E6FBBA4DF425DBAC9_verboseLabel_en-US" xlink:label="lab_us-gaap_SegmentReportingInformationOperatingIncomeLossAbstract_9DC762E16D6D7C9E6FBBA4DF425DBAC9" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">SEGMENT PROFIT:</link:label>
    <link:label id="lab_us-gaap_SegmentReportingInformationOperatingIncomeLossAbstract_9DC762E16D6D7C9E6FBBA4DF425DBAC9_label_en-US" xlink:label="lab_us-gaap_SegmentReportingInformationOperatingIncomeLossAbstract_9DC762E16D6D7C9E6FBBA4DF425DBAC9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segment Reporting Information, Operating Income (Loss) [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SegmentReportingInformationOperatingIncomeLossAbstract" xlink:label="loc_us-gaap_SegmentReportingInformationOperatingIncomeLossAbstract_9DC762E16D6D7C9E6FBBA4DF425DBAC9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SegmentReportingInformationOperatingIncomeLossAbstract_9DC762E16D6D7C9E6FBBA4DF425DBAC9" xlink:to="lab_us-gaap_SegmentReportingInformationOperatingIncomeLossAbstract_9DC762E16D6D7C9E6FBBA4DF425DBAC9" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingIncomeLoss_F42C2440351E6E1265E9A4DF425D9E14_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingIncomeLoss_F42C2440351E6E1265E9A4DF425D9E14" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Segment profit</link:label>
    <link:label id="lab_us-gaap_OperatingIncomeLoss_F42C2440351E6E1265E9A4DF425D9E14_label_en-US" xlink:label="lab_us-gaap_OperatingIncomeLoss_F42C2440351E6E1265E9A4DF425D9E14" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Income (Loss)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaap_OperatingIncomeLoss_F42C2440351E6E1265E9A4DF425D9E14" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingIncomeLoss_F42C2440351E6E1265E9A4DF425D9E14" xlink:to="lab_us-gaap_OperatingIncomeLoss_F42C2440351E6E1265E9A4DF425D9E14" xlink:type="arc" />
    <link:label id="lab_pll_SegmentReportingEarningsBeforeRotcInterestExpenseNetAndIncomeTaxes_4EA4D0C4847F2518EDC7A4DF425DA961_terseLabel_en-US" xlink:label="lab_pll_SegmentReportingEarningsBeforeRotcInterestExpenseNetAndIncomeTaxes_4EA4D0C4847F2518EDC7A4DF425DA961" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating profit</link:label>
    <link:label id="lab_pll_SegmentReportingEarningsBeforeRotcInterestExpenseNetAndIncomeTaxes_4EA4D0C4847F2518EDC7A4DF425DA961_label_en-US" xlink:label="lab_pll_SegmentReportingEarningsBeforeRotcInterestExpenseNetAndIncomeTaxes_4EA4D0C4847F2518EDC7A4DF425DA961" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segment Reporting Earnings Before Rotc Interest Expense Net and Income Taxes</link:label>
    <link:label id="lab_pll_SegmentReportingEarningsBeforeRotcInterestExpenseNetAndIncomeTaxes_4EA4D0C4847F2518EDC7A4DF425DA961_documentation_en-US" xlink:label="lab_pll_SegmentReportingEarningsBeforeRotcInterestExpenseNetAndIncomeTaxes_4EA4D0C4847F2518EDC7A4DF425DA961" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Earnings of segments before restructuring and other charges (ROTC), income taxes, extraordinary items, discontinued operations, and cumulative effect and loss on estingushment of debt.</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_SegmentReportingEarningsBeforeRotcInterestExpenseNetAndIncomeTaxes" xlink:label="loc_pll_SegmentReportingEarningsBeforeRotcInterestExpenseNetAndIncomeTaxes_4EA4D0C4847F2518EDC7A4DF425DA961" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_SegmentReportingEarningsBeforeRotcInterestExpenseNetAndIncomeTaxes_4EA4D0C4847F2518EDC7A4DF425DA961" xlink:to="lab_pll_SegmentReportingEarningsBeforeRotcInterestExpenseNetAndIncomeTaxes_4EA4D0C4847F2518EDC7A4DF425DA961" xlink:type="arc" />
    <link:label id="lab_us-gaap_RestructuringSettlementAndImpairmentProvisions_468E297D5897EB0AD958A4DF425D3356_terseLabel_en-US" xlink:label="lab_us-gaap_RestructuringSettlementAndImpairmentProvisions_468E297D5897EB0AD958A4DF425D3356" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">ROTC</link:label>
    <link:label id="lab_us-gaap_RestructuringSettlementAndImpairmentProvisions_468E297D5897EB0AD958A4DF425D3356_label_en-US" xlink:label="lab_us-gaap_RestructuringSettlementAndImpairmentProvisions_468E297D5897EB0AD958A4DF425D3356" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restructuring, Settlement and Impairment Provisions</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_RestructuringSettlementAndImpairmentProvisions" xlink:label="loc_us-gaap_RestructuringSettlementAndImpairmentProvisions_468E297D5897EB0AD958A4DF425D3356" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestructuringSettlementAndImpairmentProvisions_468E297D5897EB0AD958A4DF425D3356" xlink:to="lab_us-gaap_RestructuringSettlementAndImpairmentProvisions_468E297D5897EB0AD958A4DF425D3356" xlink:type="arc" />
    <link:label id="lab_pll_DocumentAndEntityInformationAbstract_8E5E072A4A7DF15891FBE72FB1861FAF_label_en-US" xlink:label="lab_pll_DocumentAndEntityInformationAbstract_8E5E072A4A7DF15891FBE72FB1861FAF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document and Entity Information [Abstract]</link:label>
    <link:label id="lab_pll_DocumentAndEntityInformationAbstract_8E5E072A4A7DF15891FBE72FB1861FAF_documentation_en-US" xlink:label="lab_pll_DocumentAndEntityInformationAbstract_8E5E072A4A7DF15891FBE72FB1861FAF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Document and Entity Information.</link:label>
    <link:loc xlink:href="pll-20120131.xsd#pll_DocumentAndEntityInformationAbstract" xlink:label="loc_pll_DocumentAndEntityInformationAbstract_8E5E072A4A7DF15891FBE72FB1861FAF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pll_DocumentAndEntityInformationAbstract_8E5E072A4A7DF15891FBE72FB1861FAF" xlink:to="lab_pll_DocumentAndEntityInformationAbstract_8E5E072A4A7DF15891FBE72FB1861FAF" xlink:type="arc" />
    <link:label id="lab_dei_EntitiesTable_6720209E82AB6BE39C06E80C8C20CC8D_terseLabel_en-US" xlink:label="lab_dei_EntitiesTable_6720209E82AB6BE39C06E80C8C20CC8D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entities [Table]</link:label>
    <link:label id="lab_dei_EntitiesTable_6720209E82AB6BE39C06E80C8C20CC8D_label_en-US" xlink:label="lab_dei_EntitiesTable_6720209E82AB6BE39C06E80C8C20CC8D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entities [Table]</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_EntitiesTable" xlink:label="loc_dei_EntitiesTable_6720209E82AB6BE39C06E80C8C20CC8D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntitiesTable_6720209E82AB6BE39C06E80C8C20CC8D" xlink:to="lab_dei_EntitiesTable_6720209E82AB6BE39C06E80C8C20CC8D" xlink:type="arc" />
    <link:label id="lab_dei_LegalEntityAxis_E2B8063E4EE7B949A489E80C8C20DEFF_terseLabel_en-US" xlink:label="lab_dei_LegalEntityAxis_E2B8063E4EE7B949A489E80C8C20DEFF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Legal Entity [Axis]</link:label>
    <link:label id="lab_dei_LegalEntityAxis_E2B8063E4EE7B949A489E80C8C20DEFF_label_en-US" xlink:label="lab_dei_LegalEntityAxis_E2B8063E4EE7B949A489E80C8C20DEFF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Legal Entity [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_E2B8063E4EE7B949A489E80C8C20DEFF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_LegalEntityAxis_E2B8063E4EE7B949A489E80C8C20DEFF" xlink:to="lab_dei_LegalEntityAxis_E2B8063E4EE7B949A489E80C8C20DEFF" xlink:type="arc" />
    <link:label id="lab_dei_EntityDomain_E2B17BCC13AC20EA0E95E80C8C203AF7_terseLabel_en-US" xlink:label="lab_dei_EntityDomain_E2B17BCC13AC20EA0E95E80C8C203AF7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity [Domain]</link:label>
    <link:label id="lab_dei_EntityDomain_E2B17BCC13AC20EA0E95E80C8C203AF7_label_en-US" xlink:label="lab_dei_EntityDomain_E2B17BCC13AC20EA0E95E80C8C203AF7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_E2B17BCC13AC20EA0E95E80C8C203AF7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityDomain_E2B17BCC13AC20EA0E95E80C8C203AF7" xlink:to="lab_dei_EntityDomain_E2B17BCC13AC20EA0E95E80C8C203AF7" xlink:type="arc" />
    <link:label id="lab_dei_EntityInformationLineItems_BB1E8FC1C8B46C354CCEE80C8C232649_terseLabel_en-US" xlink:label="lab_dei_EntityInformationLineItems_BB1E8FC1C8B46C354CCEE80C8C232649" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Information [Line Items]</link:label>
    <link:label id="lab_dei_EntityInformationLineItems_BB1E8FC1C8B46C354CCEE80C8C232649_label_en-US" xlink:label="lab_dei_EntityInformationLineItems_BB1E8FC1C8B46C354CCEE80C8C232649" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Information [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_EntityInformationLineItems" xlink:label="loc_dei_EntityInformationLineItems_BB1E8FC1C8B46C354CCEE80C8C232649" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityInformationLineItems_BB1E8FC1C8B46C354CCEE80C8C232649" xlink:to="lab_dei_EntityInformationLineItems_BB1E8FC1C8B46C354CCEE80C8C232649" xlink:type="arc" />
    <link:label id="lab_dei_DocumentType_B81814F3500BEE2D3893E72FB1863E96_terseLabel_en-US" xlink:label="lab_dei_DocumentType_B81814F3500BEE2D3893E72FB1863E96" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Type</link:label>
    <link:label id="lab_dei_DocumentType_B81814F3500BEE2D3893E72FB1863E96_label_en-US" xlink:label="lab_dei_DocumentType_B81814F3500BEE2D3893E72FB1863E96" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Type</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_DocumentType" xlink:label="loc_dei_DocumentType_B81814F3500BEE2D3893E72FB1863E96" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentType_B81814F3500BEE2D3893E72FB1863E96" xlink:to="lab_dei_DocumentType_B81814F3500BEE2D3893E72FB1863E96" xlink:type="arc" />
    <link:label id="lab_dei_AmendmentFlag_C55428C014516AB65CCBE72FB18611EA_terseLabel_en-US" xlink:label="lab_dei_AmendmentFlag_C55428C014516AB65CCBE72FB18611EA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amendment Flag</link:label>
    <link:label id="lab_dei_AmendmentFlag_C55428C014516AB65CCBE72FB18611EA_label_en-US" xlink:label="lab_dei_AmendmentFlag_C55428C014516AB65CCBE72FB18611EA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amendment Flag</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_AmendmentFlag" xlink:label="loc_dei_AmendmentFlag_C55428C014516AB65CCBE72FB18611EA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_AmendmentFlag_C55428C014516AB65CCBE72FB18611EA" xlink:to="lab_dei_AmendmentFlag_C55428C014516AB65CCBE72FB18611EA" xlink:type="arc" />
    <link:label id="lab_dei_DocumentPeriodEndDate_D5C686A3AD07D1FFBAF1E72FB1864C66_terseLabel_en-US" xlink:label="lab_dei_DocumentPeriodEndDate_D5C686A3AD07D1FFBAF1E72FB1864C66" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Period End Date</link:label>
    <link:label id="lab_dei_DocumentPeriodEndDate_D5C686A3AD07D1FFBAF1E72FB1864C66_label_en-US" xlink:label="lab_dei_DocumentPeriodEndDate_D5C686A3AD07D1FFBAF1E72FB1864C66" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Period End Date</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_DocumentPeriodEndDate" xlink:label="loc_dei_DocumentPeriodEndDate_D5C686A3AD07D1FFBAF1E72FB1864C66" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentPeriodEndDate_D5C686A3AD07D1FFBAF1E72FB1864C66" xlink:to="lab_dei_DocumentPeriodEndDate_D5C686A3AD07D1FFBAF1E72FB1864C66" xlink:type="arc" />
    <link:label id="lab_dei_DocumentFiscalYearFocus_BD7B2A0B83A48CD3B45BE72FB18630B3_terseLabel_en-US" xlink:label="lab_dei_DocumentFiscalYearFocus_BD7B2A0B83A48CD3B45BE72FB18630B3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Fiscal Year Focus</link:label>
    <link:label id="lab_dei_DocumentFiscalYearFocus_BD7B2A0B83A48CD3B45BE72FB18630B3_label_en-US" xlink:label="lab_dei_DocumentFiscalYearFocus_BD7B2A0B83A48CD3B45BE72FB18630B3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Fiscal Year Focus</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_DocumentFiscalYearFocus" xlink:label="loc_dei_DocumentFiscalYearFocus_BD7B2A0B83A48CD3B45BE72FB18630B3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentFiscalYearFocus_BD7B2A0B83A48CD3B45BE72FB18630B3" xlink:to="lab_dei_DocumentFiscalYearFocus_BD7B2A0B83A48CD3B45BE72FB18630B3" xlink:type="arc" />
    <link:label id="lab_dei_DocumentFiscalPeriodFocus_B09812E0787D8DEB5AA8E72FB1868B04_terseLabel_en-US" xlink:label="lab_dei_DocumentFiscalPeriodFocus_B09812E0787D8DEB5AA8E72FB1868B04" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Fiscal Period Focus</link:label>
    <link:label id="lab_dei_DocumentFiscalPeriodFocus_B09812E0787D8DEB5AA8E72FB1868B04_label_en-US" xlink:label="lab_dei_DocumentFiscalPeriodFocus_B09812E0787D8DEB5AA8E72FB1868B04" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Fiscal Period Focus</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_DocumentFiscalPeriodFocus" xlink:label="loc_dei_DocumentFiscalPeriodFocus_B09812E0787D8DEB5AA8E72FB1868B04" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentFiscalPeriodFocus_B09812E0787D8DEB5AA8E72FB1868B04" xlink:to="lab_dei_DocumentFiscalPeriodFocus_B09812E0787D8DEB5AA8E72FB1868B04" xlink:type="arc" />
    <link:label id="lab_dei_EntityRegistrantName_FD3FCAE76168AD000904E72FB1869370_terseLabel_en-US" xlink:label="lab_dei_EntityRegistrantName_FD3FCAE76168AD000904E72FB1869370" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Registrant Name</link:label>
    <link:label id="lab_dei_EntityRegistrantName_FD3FCAE76168AD000904E72FB1869370_label_en-US" xlink:label="lab_dei_EntityRegistrantName_FD3FCAE76168AD000904E72FB1869370" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Registrant Name</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_EntityRegistrantName" xlink:label="loc_dei_EntityRegistrantName_FD3FCAE76168AD000904E72FB1869370" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityRegistrantName_FD3FCAE76168AD000904E72FB1869370" xlink:to="lab_dei_EntityRegistrantName_FD3FCAE76168AD000904E72FB1869370" xlink:type="arc" />
    <link:label id="lab_dei_EntityCentralIndexKey_A5FFED0618ABBDF5403DE72FB186E8BB_terseLabel_en-US" xlink:label="lab_dei_EntityCentralIndexKey_A5FFED0618ABBDF5403DE72FB186E8BB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Central Index Key</link:label>
    <link:label id="lab_dei_EntityCentralIndexKey_A5FFED0618ABBDF5403DE72FB186E8BB_label_en-US" xlink:label="lab_dei_EntityCentralIndexKey_A5FFED0618ABBDF5403DE72FB186E8BB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Central Index Key</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_EntityCentralIndexKey" xlink:label="loc_dei_EntityCentralIndexKey_A5FFED0618ABBDF5403DE72FB186E8BB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityCentralIndexKey_A5FFED0618ABBDF5403DE72FB186E8BB" xlink:to="lab_dei_EntityCentralIndexKey_A5FFED0618ABBDF5403DE72FB186E8BB" xlink:type="arc" />
    <link:label id="lab_dei_CurrentFiscalYearEndDate_789FA19750B0B22AD2C6E72FB1862A97_terseLabel_en-US" xlink:label="lab_dei_CurrentFiscalYearEndDate_789FA19750B0B22AD2C6E72FB1862A97" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Current Fiscal Year End Date</link:label>
    <link:label id="lab_dei_CurrentFiscalYearEndDate_789FA19750B0B22AD2C6E72FB1862A97_label_en-US" xlink:label="lab_dei_CurrentFiscalYearEndDate_789FA19750B0B22AD2C6E72FB1862A97" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current Fiscal Year End Date</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_CurrentFiscalYearEndDate" xlink:label="loc_dei_CurrentFiscalYearEndDate_789FA19750B0B22AD2C6E72FB1862A97" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_CurrentFiscalYearEndDate_789FA19750B0B22AD2C6E72FB1862A97" xlink:to="lab_dei_CurrentFiscalYearEndDate_789FA19750B0B22AD2C6E72FB1862A97" xlink:type="arc" />
    <link:label id="lab_dei_EntityWellKnownSeasonedIssuer_174D46846405C7D2237C30F7B693E142_terseLabel_en-US" xlink:label="lab_dei_EntityWellKnownSeasonedIssuer_174D46846405C7D2237C30F7B693E142" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Well-known Seasoned Issuer</link:label>
    <link:label id="lab_dei_EntityWellKnownSeasonedIssuer_174D46846405C7D2237C30F7B693E142_label_en-US" xlink:label="lab_dei_EntityWellKnownSeasonedIssuer_174D46846405C7D2237C30F7B693E142" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Well-known Seasoned Issuer</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_EntityWellKnownSeasonedIssuer" xlink:label="loc_dei_EntityWellKnownSeasonedIssuer_174D46846405C7D2237C30F7B693E142" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityWellKnownSeasonedIssuer_174D46846405C7D2237C30F7B693E142" xlink:to="lab_dei_EntityWellKnownSeasonedIssuer_174D46846405C7D2237C30F7B693E142" xlink:type="arc" />
    <link:label id="lab_dei_EntityVoluntaryFilers_2643750ADA03BEF4B2F730F7E3C1DA1A_terseLabel_en-US" xlink:label="lab_dei_EntityVoluntaryFilers_2643750ADA03BEF4B2F730F7E3C1DA1A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Voluntary Filers</link:label>
    <link:label id="lab_dei_EntityVoluntaryFilers_2643750ADA03BEF4B2F730F7E3C1DA1A_label_en-US" xlink:label="lab_dei_EntityVoluntaryFilers_2643750ADA03BEF4B2F730F7E3C1DA1A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Voluntary Filers</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_EntityVoluntaryFilers" xlink:label="loc_dei_EntityVoluntaryFilers_2643750ADA03BEF4B2F730F7E3C1DA1A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityVoluntaryFilers_2643750ADA03BEF4B2F730F7E3C1DA1A" xlink:to="lab_dei_EntityVoluntaryFilers_2643750ADA03BEF4B2F730F7E3C1DA1A" xlink:type="arc" />
    <link:label id="lab_dei_EntityCurrentReportingStatus_2B6D03FE93F56B6F6A7730F805FDC494_terseLabel_en-US" xlink:label="lab_dei_EntityCurrentReportingStatus_2B6D03FE93F56B6F6A7730F805FDC494" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Current Reporting Status</link:label>
    <link:label id="lab_dei_EntityCurrentReportingStatus_2B6D03FE93F56B6F6A7730F805FDC494_label_en-US" xlink:label="lab_dei_EntityCurrentReportingStatus_2B6D03FE93F56B6F6A7730F805FDC494" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Current Reporting Status</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_EntityCurrentReportingStatus" xlink:label="loc_dei_EntityCurrentReportingStatus_2B6D03FE93F56B6F6A7730F805FDC494" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityCurrentReportingStatus_2B6D03FE93F56B6F6A7730F805FDC494" xlink:to="lab_dei_EntityCurrentReportingStatus_2B6D03FE93F56B6F6A7730F805FDC494" xlink:type="arc" />
    <link:label id="lab_dei_EntityFilerCategory_9DD0EA130C9D9D7AD952E72FB186C349_terseLabel_en-US" xlink:label="lab_dei_EntityFilerCategory_9DD0EA130C9D9D7AD952E72FB186C349" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Filer Category</link:label>
    <link:label id="lab_dei_EntityFilerCategory_9DD0EA130C9D9D7AD952E72FB186C349_label_en-US" xlink:label="lab_dei_EntityFilerCategory_9DD0EA130C9D9D7AD952E72FB186C349" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Filer Category</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_EntityFilerCategory" xlink:label="loc_dei_EntityFilerCategory_9DD0EA130C9D9D7AD952E72FB186C349" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityFilerCategory_9DD0EA130C9D9D7AD952E72FB186C349" xlink:to="lab_dei_EntityFilerCategory_9DD0EA130C9D9D7AD952E72FB186C349" xlink:type="arc" />
    <link:label id="lab_dei_EntityCommonStockSharesOutstanding_CF9FC11AA150E51668D6E72FB187F569_terseLabel_en-US" xlink:label="lab_dei_EntityCommonStockSharesOutstanding_CF9FC11AA150E51668D6E72FB187F569" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Common Stock, Shares Outstanding</link:label>
    <link:label id="lab_dei_EntityCommonStockSharesOutstanding_CF9FC11AA150E51668D6E72FB187F569_label_en-US" xlink:label="lab_dei_EntityCommonStockSharesOutstanding_CF9FC11AA150E51668D6E72FB187F569" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Common Stock, Shares Outstanding</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_EntityCommonStockSharesOutstanding" xlink:label="loc_dei_EntityCommonStockSharesOutstanding_CF9FC11AA150E51668D6E72FB187F569" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityCommonStockSharesOutstanding_CF9FC11AA150E51668D6E72FB187F569" xlink:to="lab_dei_EntityCommonStockSharesOutstanding_CF9FC11AA150E51668D6E72FB187F569" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockParOrStatedValuePerShare_5483C32C2484013C93A4E72FB23D677A_verboseLabel_en-US" xlink:label="lab_us-gaap_CommonStockParOrStatedValuePerShare_5483C32C2484013C93A4E72FB23D677A" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Common stock, par value per share (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_CommonStockParOrStatedValuePerShare_5483C32C2484013C93A4E72FB23D677A_label_en-US" xlink:label="lab_us-gaap_CommonStockParOrStatedValuePerShare_5483C32C2484013C93A4E72FB23D677A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stock, Par or Stated Value Per Share</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_5483C32C2484013C93A4E72FB23D677A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockParOrStatedValuePerShare_5483C32C2484013C93A4E72FB23D677A" xlink:to="lab_us-gaap_CommonStockParOrStatedValuePerShare_5483C32C2484013C93A4E72FB23D677A" xlink:type="arc" />
  </link:labelLink>
</link:linkbase>
