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COMMITTMENTS AND CONTINGENCIES: (Tables)

12 Months Ended

Dec. 31, 2011

COMMITMENTS AND CONTINGENCIES:

Schedule of environmental capital expenditures

		2011			2010			2009
Peruvian operations		$	2.4		$	6.4		$	2.4
Mexican operations		11.5			10.2			25.1
Total		$	13.9		$	16.6		$	27.5

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Tabular disclosure of environmental capital expenditures incurred during the period.

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