INVENTORIES: (Tables)

3 Months Ended

Mar. 31, 2014

INVENTORIES:

Schedule of inventories

(in millions)	March 31,2014		December 31,2013
Inventory, current:
Metals at lower of average cost or market:
Finished goods	$	103.4	$	84.2
Work-in-process	339.3		305.4
Supplies at average cost	307.2		304.3
Total current inventory	$	749.9	$	693.9
Inventory, long-term:
Leach stockpiles	$	441.2	$	395.2