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Nature of Operations and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2022

Nature of Operations and Summary of Significant Accounting Policies

Summary of estimated economic lives of of depreciable assets

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​	​	​	​
​	Range of Lives		​
Asset retirement costs	​	UOP	​
Furniture, computer and office equipment	​	3 to 10 years	​
Light vehicles and other mobile equipment	​	4 years	​
Machinery and equipment	​	UOP to 8 years	​
Mill facilities and related infrastructure	​	UOP	​
Mine development and mineral interests	​	UOP	​
Buildings and infrastructure	​	UOP to 4 years	​

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