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Accrued Liabilities
6 Months Ended
Jun. 30, 2022
Payables and Accruals [Abstract]  
Accrued Liabilities
5. Accrued Liabilities
Accrued liabilities consisted of the following:
June 30, 2022December 31, 2021
 
(Dollars in millions)
Accrued benefits$18.9 $21.7 
Current portion of postretirement benefit obligation2.6 2.6 
Other taxes payable11.8 9.2 
Current portion of black lung liability5.4 5.4 
Accrued legal4.5 4.5 
Other8.4 9.0 
Total accrued liabilities$51.6 $52.4