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Inventories
 12 Months Ended
Dec. 31, 2022
INVENTORIES [Abstract]  
Inventories Inventories
As at
December 31
As at
December 31
(in millions of U.S. dollars)20222021
INVENTORIES


Stockpile ore
21.2 23.7 
Work-in-process12.0 10.0 
Finished goods(1)
17.5 14.3 
Supplies65.0 53.0 
Total current inventories115.7 101.0 
1.The amount of inventories recognized in operating expenses for the year ended December 31, 2022 was $370.9 million (2021 - $362.7 million).