Asset Retirement Obligations (Tables)

3 Months Ended

Jul. 31, 2016

Asset Retirement Obligation Disclosure [Abstract]

Schedule of Changes to Asset Retirement Obligation

Changes to the asset retirement obligation were as follows:

	July 31, 2016			April 30, 2016
Balance, beginning of period	$	763,062		$	918,430
Disposals		(216,580	)		(207,827	)
Accretion		4,207			52,459
		550,689			763,062
Less: Current portion for cash flows expected to be incurred within one year		(406,403	)		(561,958	)
Long-term portion, end of period	$	144,286		$	201,104

Schedule of Expected Timing of Asset Retirement Obligations

Expected timing of asset retirement obligations:

Year Ending April 30,
2017 (remainder of year)	$	406,403
2018		-
2019		-
2020		-
2021		-
Thereafter		229,287
Subtotal		635,690
Effect of discount		(85,001	)
Total	$	550,689