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Note 17. Sale of the Velardea Mill | 12 Months Ended
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Dec. 31, 2011
Property, Plant and Equipment, Schedule of Significant Acquisitions and Disposals [Table Text Block] | Note 17: Sale of the Velardeña Mill On March 9, 2009, we completed the sale of our processing facility located in Velardeña, Mexico to ECU Silver Mining Inc. (“ECU”) for $8 million in cash and 750,000 shares of ECU common stock, valued at $0.3 million at the time of the transaction. Ore produced from the San Sebastian and Don Sergio mines at our San Sebastian unit was processed at the Velardeña mill. Processing of economic ore was completed during the fourth quarter of 2005, and the mill was placed on care and maintenance at that time. The mill had a book value of approximately $3 million at the time of the sale. We recognized a pre-tax gain of approximately $6.2 million during the first quarter of 2009 as a result of the sale. The gain includes $1.0 million related to the elimination of the asset retirement obligation associated with the mill.

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- Definition Tabular disclosure of all information related to any significant acquisition and disposal. Disclosure may include methodology and assumptions, type of asset, asset classification, useful life, useful purpose, acquisition cost, method of acquisition or disposal, depreciation method, gain (loss) on disposal pretax and net of tax, date of acquisition or disposal and restrictions on amount of proceeds from donated assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 47 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760 + Details
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