Quarterly report pursuant to Section 13 or 15(d)

ACCRUED LIABILITIES

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ACCRUED LIABILITIES
 6 Months Ended
Jun. 30, 2021
Accrued Liabilities [Abstract]  
ACCRUED LIABILITIES ACCRUED LIABILITIES
Accrued liabilities consisted of the following:
  June 30, 2021 December 31, 2020
  (thousands of dollars)
State taxes $ 107  $ 125 
Property taxes 1,772  — 
Payroll 1,615  2,282 
Royalties 526  260 
Officer compensation 766  1,053 
AMAK foreign taxes and transaction costs —  1,613 
Other 2,602  1,524 
Total accrued liabilities $ 7,388  $ 6,857