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v3.20.1

INVENTORIES: (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2020 | Mar. 31, 2019 | Dec. 31, 2019
Metals at average cost: |  |  |
Finished goods | $ 82.1 |  | $ 87.2
Work-in-process | 263.8 |  | 259.7
Ore stockpiles on leach pads | 385.1 |  | 358.4
Supplies at average cost | 348.4 |  | 363.2
Total current inventory | 1,079.4 |  | 1,068.5
Inventory, long-term: |  |  |
Ore stockpiles on leach pads | 1,149.0 |  | $ 1,230.3
Total leaching costs added as long-term inventory of ore stockpiles in leach pads | 50.7 | $ 122.3 |
Long-term leaching inventories recognized as cost of sales | $ 105.9 | $ 94.1 |

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