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Critical accounting estimates and judgments (Tables)
12 Months Ended
Dec. 31, 2021
Estimate of the reclamation obligations

 

 

Years ended December 31

 

 

 

2021

 

 

2020

 

Risk-free interest rate

 

 

1.68%

 

 

1.21%

Annual inflation

 

 

2.5%

 

 

2.0%