Annual report pursuant to Section 13 and 15(d)

Asset Retirement Obligation - Schedule of Asset Retirement Obligation (Details)

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Asset Retirement Obligation - Schedule of Asset Retirement Obligation (Details) - USD ($)
12 Months Ended
Apr. 30, 2021
Apr. 30, 2020
Asset Retirement Obligation Disclosure [Abstract]    
Balance, beginning of period $ 168,392 $ 88,746
Addition and changes in estimates 18,746 69,172
Accretion expense 17,477 10,474
Balance, end of period $ 204,615 $ 168,392