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INVENTORIES (Tables)
 9 Months Ended
Sep. 30, 2017
Inventory Disclosure [Abstract]  
Schedule of Inventory
Inventory components consist of the following:
 
September 30,
2017
 
December 31,
2016
Coal
$
9,498

 
$
7,800

Supplies
42,506

 
42,361

Total Inventories
$
52,004

 
$
50,161