INVENTORIES: (Tables)

9 Months Ended

Sep. 30, 2024

INVENTORIES:

Schedule of inventories

	At September 30,		At December 31,
(in millions)	2024		2023
Inventory, current:
Metals at average cost:
Finished goods	$	60.3	$	68.8
Work-in-process		292.9		313.0
Ore stockpiles on leach pads		224.6		230.9
Supplies at average cost		412.6		404.2
Total current inventory	$	990.5	$	1,016.9
Inventory, long-term:
Ore stockpiles on leach pads	$	1,143.7	$	1,121.7