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Note 10 - Asset Retirement Obligations - Asset Retirement Obligations (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Balance     $ 3,794,985  
Additions     0  
Liabilities settled     0  
Accretion expense $ 55,000 $ 53,855 163,805 $ 161,501
Balance $ 3,958,790   $ 3,958,790