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COMMITTMENTS AND CONTINGENCIES: (Tables)
3 Months Ended
Mar. 31, 2012
COMMITMENTS AND CONTINGENCIES:  
Schedule of environmental capital expenditures

 

 

 

 

2012

 

2011

 

Peruvian operations

 

$

1.1

 

$

0.4

 

Mexican operations

 

8.3

 

2.5

 

 

 

$

9.4

 

$

2.9