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Asset Retirement Obligation and Reclamation Liabilities (Tables)
12 Months Ended
Dec. 31, 2021
Asset Retirement Obligation and Reclamation Liabilities  
Summary of activity in the Velardena Properties ARO

Year Ended

 

December 31,

    

2021

    

2020

 

(in thousands)

 

Beginning balance

$

3,156

$

2,825

Changes in estimates, and other

 

143

 

82

Accretion expense

 

262

 

249

Ending balance

$

3,561

$

3,156