INVENTORIES: (Tables)

9 Months Ended

Sep. 30, 2013

INVENTORIES:

Schedule of inventories

(in millions)	At September 30,2013		At December 31,2012
Inventory, current:
Metals at lower of average cost or market:
Finished goods	$	79.8	$	101.1
Work-in-process	324.7		297.4
Supplies at average cost	300.1		284.2
Total current inventory	$	704.6	$	682.7
Inventory, long-term
Long-term leach stockpiles	$	373.6	$	262.8