INVENTORIES : (Tables)

9 Months Ended

Sep. 30, 2015

INVENTORIES:

Schedule of inventories

(in millions)	At September 30, 2015		At December 31, 2014
Inventory, current:
Metals at average cost:
Finished goods	$	81.3	$	84.6
Work-in-process	416.3		450.5
Supplies at average cost	307.2		301.4
Total current inventory	$	804.8	$	836.5
Inventory, long-term
Leach stockpiles	$	726.4	$	512.7