Note 2 - Inventories (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Inventories.
Raw coal	$ 22,252	$ 19,709
Saleable coal	28,082	17,969
Supplies	5,789	5,680
Total inventories	$ 56,123	$ 43,358

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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