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COMMITMENTS AND CONTINGENCIES: (Tables) | 12 Months Ended
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Dec. 31, 2013
COMMITMENTS AND CONTINGENCIES: |
Schedule of environmental capital expenditures | Environmental capital expenditures in years 2013, 2012 and 2011, were as follows (in millions):
|  | 2013 |  | 2012 |  | 2011 |
Peruvian operations |  | $ | 20.9 |  | $ | 6.7 |  | $ | 2.5 |
Mexican operations |  | 39.8 |  | 20.7 |  | 11.5 |
Total |  | $ | 60.7 |  | $ | 27.4 |  | $ | 14.0 |

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- Definition Tabular disclosure of environmental capital expenditures incurred during the period. + References No definition available. + Details
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