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    <Log type="Info">Process Flow-Through: 020000 - Statement - Condensed Consolidated Statements of Operations (Unaudited)</Log>
    <Log type="Info">Process Flow-Through: 030000 - Statement - Condensed Consolidated Statement of Comprehensive Income (Unaudited)</Log>
    <Log type="Info">Process Flow-Through: 050000 - Statement - Consolidated Statements of Cash Flows (Unaudited)</Log>
    <Log type="Info">Process Flow-Through: 050100 - Statement - Consolidated Statements of Cash Flows (Unaudited) (Parenthetical)</Log>
  </Logs>
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    <File>gsm-20120930.xsd</File>
    <File>gsm-20120930_cal.xml</File>
    <File>gsm-20120930_def.xml</File>
    <File>gsm-20120930_lab.xml</File>
    <File>gsm-20120930_pre.xml</File>
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  <BaseTaxonomies />
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
