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Property, Plant and Equipment (Tables)
 12 Months Ended
Dec. 31, 2024
Property, Plant and Equipment [Abstract]  
Schedule of Property, Plant and Equipment
Property, plant and equipment consists of the following:
 December 31,
 20242023
Plant and Equipment$3,633,741 $3,458,655 
Coal Properties and Surface Lands913,819 906,343 
Airshafts521,334 492,806 
Mine Development366,260 366,260 
Advance Mining Royalties328,927 328,340 
Total Property, Plant and Equipment5,764,081 5,552,404 
Less: Accumulated Depreciation, Depletion and Amortization3,842,382 3,649,281 
Total Property, Plant and Equipment - Net$1,921,699 $1,903,123