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INVENTORIES - Schedule of Inventory, Current (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Inventory Disclosure [Abstract]
Concentrates and work-in-progress	$ 15,095	$ 35,807
Inventory of ore in stockpiles	15,895	3,072
Raw materials and consumables	4,920	1,841
Total inventories	$ 35,910	$ 40,720

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Inventory of ore in stockpiles

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

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