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COMMITTMENTS AND CONTINGENCIES: (Tables) | 12 Months Ended
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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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- Definition Tabular disclosure of environmental capital expenditures incurred during the period. + References No definition available. + Details
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