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Mineral Leaseholds, net (Tables)
12 Months Ended
Dec. 31, 2022
Extractive Industries [Abstract]  
Mineral Leaseholds, Net of Accumulated Depletion Mineral leaseholds, net of accumulated depletion, consisted of the following:
December 31,
20222021
Mineral leaseholds$1,282 $1,306 
Less accumulated depletion(581)(559)
Mineral leaseholds, net$701 $747