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Changes to Asset Retirement Obligation (Details) - USD ($)
12 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Asset Retirement Obligation Disclosure [Abstract]    
Balance at beginning of period $ 1,291,066 $ 1,263,584
Accretion (Note 10) 134,768 122,732
Payments (131,337) (95,250)
Balance at end of period $ 1,294,497 $ 1,291,066