INVENTORIES: (Tables)

6 Months Ended

Jun. 30, 2022

INVENTORIES:

Schedule of inventories

	At June 30,		At December 31,
(in millions)	2022		2021
Inventory, current:
Metals at average cost:
Finished goods	$	99.5	$	58.6
Work-in-process		391.2		340.7
Ore stockpiles on leach pads		254.7		259.7
Supplies at average cost		326.2		313.9
Total current inventory	$	1,071.6	$	972.9
Inventory, long-term:
Ore stockpiles on leach pads	$	1,087.7	$	1,097.6