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   &lt;div align="left" style="font-size: 10pt; margin-top: 6pt"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;In the third quarter of 2010, total income tax expense of $111&amp;#160;million includes a $12&amp;#160;million
   tax benefit on costs associated with the BJ Services acquisition. Excluding the impact of the
   acquisition-related costs, our effective tax rate on operating profits in the third quarter of 2010
   is 32.5%, which is lower than the U.S. statutory income tax rate of 35% due to tax benefits arising
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   &lt;div align="left" style="font-size: 10pt; margin-top: 6pt"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;For the first nine months of 2010, total income tax expense of $285&amp;#160;million includes a $20
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   months of 2010 is 36%, which is higher than the U.S. statutory income tax rate of 35% due to higher
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      <ElementReferences>Reference 1: http://www.xbrl.org/2003/role/presentationRef
 -Publisher SEC
 -Name Regulation S-X (SX)
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
 -Publisher FASB
 -Name Statement of Financial Accounting Standard (FAS)
 -Number 109
 -Paragraph 136, 172

Reference 3: http://www.xbrl.org/2003/role/presentationRef
 -Publisher FASB
 -Name Statement of Financial Accounting Standard (FAS)
 -Number 109
 -Paragraph 43, 44, 45, 46, 47, 48, 49

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