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2. Summary of Significant Accounting Policies: Asset Retirement Obligations and Remediation Costs (Policies) | 12 Months Ended
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Dec. 31, 2017
Policies |
Asset Retirement Obligations and Remediation Costs | Asset Retirement Obligations and Remediation Costs Mineral properties are subject to standards for mine reclamation that have been established by various governmental agencies. Asset retirement obligations are related to the retirement of the mine when a contractual obligation has been established and a reasonable estimate of fair value can be determined. These obligations are initially measured at fair value with the resulting cost capitalized at the present value of estimated reclamation costs. An asset and a related liability are recorded for the fair value of these costs. The liability is accreted and the asset amortized over the life of the related asset. Adjustments are made for changes resulting from either the timing or amount of the original estimate underlying the obligation. If there is an impairment to an asset’s carrying value and a decision is made to permanently close the property, changes to the liability are recognized and charged to the provision for closed operations and environmental matters. Separate from asset retirement obligations, the Company records liability for remediation costs when a reasonable estimate of fair value can be determined. Accrued remediation costs are not discounted.

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- Definition Disclosure of accounting policy for legal obligation associated with retirement of long-lived asset that results from acquisition, construction, or development or from normal operation of long-lived asset, and environmental remediation liability from improper or other-than-normal operation of long-lived asset. Includes, but is not limited to, timing of recognition and whether obligation is measured on discounted basis. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13231-110859 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84158767&loc=d3e18780-107790 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 55 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=6571209&loc=d3e13669-110860 + Details
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