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Asset Retirement Obligation (Tables)
6 Months Ended
Oct. 31, 2019
Asset Retirement Obligation Disclosure [Abstract]  
Schedule of Asset Retirement Obligation

The following table summarizes activity in the Company’s ARO for the periods presented:

 

    October 31, 2019     October 31, 2018  
    (unaudited)     (unaudited)  
Balance, beginning of six-month period   $ 88,746     $ 81,885  
Addition and changes in estimates     -       -  
Accretion expense     4,331       2,826  
Balance, end of period   $ 93,077     $ 79.059