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COMMITTMENTS AND CONTINGENCIES: (Tables)
6 Months Ended
Jun. 30, 2012
COMMITMENTS AND CONTINGENCIES:  
Schedule of environmental capital expenditures

 

 

 

 

2012

 

2011

 

 

 

 

 

 

 

Peruvian operations

 

$

2.1

 

$

1.1

 

Mexican operations

 

10.7

 

3.7

 

 

 

$

12.8

 

$

4.8