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INVENTORIES (Tables)
3 Months Ended
Mar. 31, 2020
Inventory Disclosure [Abstract]  
Schedule of Inventory
Inventory components consist of the following:
 
March 31,
2020
 
December 31,
2019
Coal
$
4,621

 
$
2,484

Supplies
54,017

 
51,647

Total Inventories
$
58,638

 
$
54,131