Note 11 - Property, Plant and Equipment (Tables)

9 Months Ended

Sep. 30, 2020

Notes Tables

Property, Plant and Equipment [Table Text Block]

	September 30,		December 31,
	2020		2019
Plant and Equipment	$	3,131,792	$	3,028,514
Coal Properties and Surface Lands		874,439		872,909
Airshafts		449,863		437,003
Mine Development		343,960		342,706
Advance Mining Royalties		326,649		327,048
Total Property, Plant and Equipment		5,126,703		5,008,180
Less: Accumulated Depreciation, Depletion and Amortization		3,043,463		2,916,015
Total Property, Plant and Equipment, Net	$	2,083,240	$	2,092,165