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Asset Retirement Obligations (Details Textual) - USD ($)
6 Months Ended
Mar. 31, 2018
Sep. 30, 2017
Asset Retirement Obligations (Textual)    
Estimate of undiscounted cash flows related to asset retirement obligation $ 626,859 $ 647,631
Fair value of liability $ 486,517 $ 493,411
Risk free rate 3.74%  
Inflation rate 2.00%  
Term of settlement of the obligation 25 years