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Environmental Reclamation Liability - Movements in the environmental reclamation liability (Details) - USD ($)
3 Months Ended 6 Months Ended
Jan. 15, 2021
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2022
Environmental Reclamation Liability            
Balance at beginning of period       $ 10,800,936 $ 9,888,200  
Additions $ 7,473,805 $ (536,366) $ 665,370 581,937 665,370  
Work performed on early action items       (2,375,690) (997,198)  
Current portion   8,412,823 5,799,685 8,412,823 5,799,685 $ 9,590,766
Non-current portion   594,360 3,756,687 594,360 3,756,687 $ 1,210,170
Balance at end of period   $ 9,007,183 $ 9,556,372 $ 9,007,183 $ 9,556,372