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COMMITMENTS AND CONTINGENCIES: (Tables) | 12 Months Ended
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Dec. 31, 2014
COMMITMENTS AND CONTINGENCIES: |
Schedule of environmental capital expenditures | Environmental capital expenditures in years 2014, 2013 and 2012, were as follows (in millions):
|  | 2014 |  | 2013 |  | 2012 |
Peruvian operations |  | $ | 127.0 |  | $ | 76.9 |  | $ | 27.0 |
Mexican operations |  | 24.4 |  | 39.8 |  | 20.7 |
Total |  | $ | 151.4 |  | $ | 116.7 |  | $ | 47.7 |

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