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Metal and Other Inventories
9 Months Ended
Sep. 30, 2013
Inventory Disclosure [Abstract]  
METAL AND OTHER INVENTORIES
METAL AND OTHER INVENTORY
Metal and other inventory consist of the following (in thousands): 
 
September 30, 2013
 
December 31, 2012
Concentrate and doré inventory
$
57,519

 
$
91,130

Supplies
66,018

 
79,540

Metal and other inventory
$
123,537

 
$
170,670