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Production costs by nature
 12 Months Ended
Dec. 31, 2025
Analysis of income and expense [abstract]  
Production costs by nature Production costs by nature
 20252024
 $$
Raw materials and consumables519,075 491,855 
Salaries and employee benefits168,805 134,938 
Contractors142,619 92,225 
Other79,171 51,756 
Change in inventories(16,532)4,444 
Capitalized to mining interests(147,692)(93,390)
 745,446 681,828 

Salaries and employee benefits expense included in general and administrative costs were $30 million for the year ended December 31, 2025 (2024 - $29 million).