INVENTORIES: (Tables)

12 Months Ended

Dec. 31, 2024

INVENTORIES:

Schedule of inventories

	At December 31,
(in millions)	2024		2023
Inventory, current:
Metals at average cost:
Finished goods	$	55.9	$	68.8
Work-in-process		343.8		313.0
Ore stockpiles on leach pads		217.2		230.9
Supplies at average cost		431.9		404.2
Total current inventory	$	1,048.9	$	1,016.9
Inventory, long-term:
Ore stockpiles on leach pads	$	1,145.8	$	1,121.7