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AMAK Inventories (Tables)
12 Months Ended
Dec. 31, 2020
Inventory [Line Items]  
Inventories
Inventories include the following at December 31:
20202019
(thousands of dollars)
Raw material$2,580 $2,100 
Work in process138 142 
Finished products10,227 11,382 
Total inventory$12,945 $13,624 
AMAK  
Inventory [Line Items]  
Inventories
Inventories consisted of the following at:

September 30,December 31,
20202019
Stockpile ore15,623,461 18,657,218 
Ore concentrates20,557,020 6,294,948 
Precious metal dore2,235,799 4,490,589 
Explosives484,169 326,599 
Chemicals and other6,117,375 5,507,986 
45,017,824 35,277,340