INVENTORIES: (Tables)

6 Months Ended

Jun. 30, 2013

INVENTORIES:

Schedule of inventories

(in millions)	At June 30, 2013		At December 31, 2012
Inventory, current:
Metals at lower of average cost or market:
Finished goods	$	91.9	$	101.1
Work-in-process	287.2		297.4
Supplies at average cost	303.9		284.2
Total current inventory	$	683.0	$	682.7
Inventory, long-term
Long-term Leach stockpiles	$	326.2	$	262.8