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INVENTORIES (Tables)
3 Months Ended
Mar. 31, 2021
INVENTORIES  
Schedule of inventories

March 31, 

December 31, 

2021

    

2020

 

(in thousands)

Coal

$

49,804

$

19,756

Supplies (net of reserve for obsolescence of $5,545 and $5,547, respectively)

 

35,177

 

36,651

Total inventories, net

$

84,981

$

56,407