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8. Asset Retirement Obligation (Details) | 12 Months Ended
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Dec. 31, 2017
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Asset Retirement Obligations, Description | In 2016 management estimated the initial cost to reclaim the Golden Chest mine to be $42,182. During the year ended December 31, 2017, the obligations for the Golden Chest and New Jersey mill properties were revised in consideration of additional disturbance activity and timing of future reclamation. The estimated reclamation costs were discounted using credit adjusted, risk-free interest rate of 5.0% from the time the obligation was incurred to the time management expects to pay the retirement obligation.

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- Definition A general description of the asset retirement obligations and the associated long-lived assets. Description may include the terms of the legal restriction. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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