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Inventories (Tables)
6 Months Ended
Jun. 30, 2023
Inventories  
Inventories

    

June 30, 

    

December 31, 

 

2023

 

2022

(In thousands)

Coal

$

107,429

$

96,954

Repair parts and supplies

 

155,881

 

126,061

$

263,310

$

223,015