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Note 4 - Inventory
3 Months Ended
Mar. 31, 2024
Notes to Financial Statements  
Inventory Disclosure [Text Block]

(4)

INVENTORY

 

Inventory is valued at a lower of cost or net realizable value (NRV).  As of March 31, 2024, and December 31, 2023, coal inventory includes NRV adjustments of $1.3 million and $2.0 million, respectively.