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8. Asset Retirement Obligation: Schedule of Change in Asset Retirement Obligation (Details) - USD ($)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Details    
Asset Retirement Obligation, Beginning Balance $ 72,218 $ 28,656
Asset Retirement Obligation, Period Increase (Decrease) 8,456 5,291
Asset Retirement Obligation, Liabilities Incurred 40,886 38,271
Asset Retirement Obligation, Ending Balance $ 121,560 $ 72,218