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Production Costs (Tables)
 12 Months Ended
Dec. 31, 2021
Analysis of income and expense [abstract]  
Schedule of production costs
Production costs are comprised of the following: 
20212020
Materials and consumables$381,446 $284,215 
Salaries and employee benefits (1)
317,081 262,753 
Contractors226,095 125,242 
Utilities48,675 39,242 
Other (recovery) expense34,165 18,198 
Changes in inventories (2)
(81,983)(32,978)
 $925,479 $696,672 
(1)Employee compensation and benefits expense is comprised of:
 20212020
Wages, salaries and bonuses$352,736 $317,668 
Share-based compensation5,128 3,024 
Total employee compensation and benefit expenses357,864 320,692 
Less: Expensed within Care and Maintenance expenses(4,310)(37,695)
Less: Expensed within General and Administrative expenses(31,230)(17,180)
Less: Expensed within Exploration expenses(5,243)(3,064)
Employee compensation and benefits expenses included in production costs$317,081 $262,753 
(2)Includes NRV adjustments to inventory to increase production costs by $8.7 million for the year ended December 31, 2021 (2020 - reduce by $16.2 million).