INVENTORIES:

12 Months Ended

Dec. 31, 2020

INVENTORIES:

INVENTORIES:

NOTE 4—INVENTORIES:

	At December 31,
(in millions)	2020		2019
Inventory, current:
Metals at average cost:
Finished goods	$	50.8	$	87.2
Work-in-process		248.9		259.7
Ore stockpiles on leach pads		298.5		358.4
Supplies at average cost		352.0		363.2
Total current inventory	$	950.2	$	1,068.5
Inventory, long-term:
Ore stockpiles on leach pads	$	1,125.0	$	1,230.3

Total leaching costs added as long-term inventory of ore stockpiles in leach pads amounted to $194.0 million, $469.0 million and $506.6 million in 2020, 2019 and 2018, respectively. Long-term leaching inventories recognized as cost of sales amounted to $359.1 million, $385.8 million and $299.4 million in 2020, 2019 and 2018, respectively.