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INVENTORIES: (Tables)
6 Months Ended
Jun. 30, 2014
INVENTORIES:  
Schedule of inventories

(in millions)

 

At June 30,
2014

 

At December 31,
2013

 

Inventory, current:

 

 

 

 

 

Metals at lower of average cost or market:

 

 

 

 

 

Finished goods

 

$

98.3

 

$

84.2

 

Work-in-process

 

346.9

 

305.4

 

Supplies at average cost

 

309.4

 

304.3

 

Total current inventory

 

$

754.6

 

$

693.9

 

 

 

 

 

 

 

Inventory, long-term

 

 

 

 

 

Leach stockpiles

 

$

495.2

 

$

395.2