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Note 10 - Asset Retirement Obligations (Tables)
9 Months Ended
Sep. 30, 2022
Notes Tables  
Schedule of Change in Asset Retirement Obligation [Table Text Block]

Balance, December 31, 2021

 $3,162,725 

Additions

  38,683 

Liabilities settled

  - 

Accretion expense

  152,536 
     

Balance, September 30, 2022

 $3,353,944