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INVENTORIES (Tables)
12 Months Ended
Dec. 31, 2020
INVENTORIES  
Schedule of inventories

December 31, 

2020

    

2019

 

(in thousands)

Coal

$

19,756

$

63,645

Supplies (net of reserve for obsolescence of $5,547 and $5,555, respectively)

 

36,651

 

37,660

Total inventories, net

$

56,407

$

101,305