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REVENUE AND COST OF SALES (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Concentrate Sales $ 9,445,000 $ 1,881,000 $ 30,423,000 $ 1,881,000
Provisional Pricing Adjustments (327,000) 0 (885,000) 29,000
Total Revenue $ 9,118,000 $ 1,881,000 $ 29,538,000 $ 1,910,000