INVENTORIES: (Tables)

3 Months Ended

Mar. 31, 2024

INVENTORIES:

Schedule of inventories

	At March 31,		At December 31,
(in millions)	2024		2023
Inventory, current:
Metals at average cost:
Finished goods	$	85.7	$	68.8
Work-in-process		286.9		313.0
Ore stockpiles on leach pads		232.6		230.9
Supplies at average cost		409.2		404.2
Total current inventory	$	1,014.4	$	1,016.9
Inventory, long-term:
Ore stockpiles on leach pads	$	1,132.5	$	1,121.7