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INVENTORIES: (Tables)

3 Months Ended

Mar. 31, 2019

INVENTORIES:

Schedule of inventories

		At March 31,			At December 31,
(in millions)		2019			2018
Inventory, current:
Metals at average cost:
Finished goods		$	54.1		$	69.6
Work-in-process			250.7			256.8
Ore stockpiles on leach pads			351.7			328.0
Supplies at average cost:			379.1			378.3
Total current inventory		$	1,035.6		$	1,032.7
Inventory, non-current:
Ore stockpiles on leach pads		$	1,182.0		$	1,177.4

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