INVENTORIES:

Inventory components consist of the following:



	March 31, 2018		December 31, 2017
Coal	$	17,104	$	11,411
Supplies	43,662		42,009
Total Inventories	$	60,766	$	53,420

Inventories are stated at the lower of cost or net realizable value. The cost of coal inventories is determined by the first-in, first-out (“FIFO”) method. Coal inventory costs include labor, supplies, equipment costs, operating overhead, depreciation, depletion and amortization, and other related costs. The cost of supplies inventory is determined by the average cost method and includes operating and maintenance supplies to be used in the Company's coal operations.