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Inventories (Tables)
3 Months Ended
Mar. 31, 2023
Inventories  
Inventories

    

March 31, 

    

December 31, 

 

2023

 

2022

(In thousands)

Coal

$

128,919

$

96,954

Repair parts and supplies

 

142,236

 

126,061

$

271,155

$

223,015