ASSET RETIREMENT OBLIGATIONS (Details 1) - USD ($)	12 Months Ended
	Jul. 31, 2016	Jul. 31, 2015
Assumptions Used For ARO Estimates [Line Items]
Undiscounted amount of estimated cash flows	$ 6,650,255	$ 6,600,868
Minimum [Member]
Assumptions Used For ARO Estimates [Line Items]
Payable in years	4 years 1 month 6 days	2 years 6 months
Inflation rate	1.15%	2.02%
Discount rate	5.02%	6.56%
Maximum [Member]
Assumptions Used For ARO Estimates [Line Items]
Payable in years	15 years	15 years
Inflation rate	2.25%	2.25%
Discount rate	8.00%	8.00%