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Note 11 - Asset Retirement Obligations - Asset Retirement Obligations (Details) - USD ($)
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Balance $ 3,569,580 $ 3,162,725
Additions 8,904 200,496
Accretion expense 216,501 206,359
Liabilities settled 0 0
Balance $ 3,794,985 $ 3,569,580