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Property, Plant and Equipment (Tables)
3 Months Ended
Mar. 31, 2023
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
Property, plant and equipment consists of the following:
March 31,
2023
December 31,
2022
Plant and Equipment$3,359,934 $3,330,755 
Coal Properties and Surface Lands901,364 898,628 
Airshafts482,641 481,090 
Mine Development366,241 366,241 
Advance Mining Royalties332,555 331,863 
Total Property, Plant and Equipment5,442,735 5,408,577 
Less: Accumulated Depreciation, Depletion and Amortization3,502,386 3,448,495 
Total Property, Plant and Equipment - Net$1,940,349 $1,960,082