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Accrued Liabilities
9 Months Ended
Sep. 30, 2023
Payables and Accruals [Abstract]  
Accrued Liabilities
5. Accrued Liabilities
Accrued liabilities consisted of the following:
September 30, 2023December 31, 2022
 
(Dollars in millions)
Accrued benefits$21.6 $29.7 
Current portion of postretirement benefit obligation2.4 2.4 
Other taxes payable12.8 9.8 
Current portion of black lung liability5.9 5.9 
Accrued legal0.6 4.9 
Accrued losses on purchase commitments(1)
6.0 — 
Other5.6 8.1 
Total accrued liabilities$54.9 $60.8 
(1)Reflects lower of cost or net realizable value adjustments of $6.0 million on purchase commitments of coal inventory.