Note 2 - Inventories (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Inventories
Raw coal	$ 42,374	$ 22,414
Saleable coal	19,788	18,223
Supplies	5,263	4,336
Total inventories	$ 67,425	$ 44,973

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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