Face (par) amount of debt instrument at time of issuance.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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- Definition

Amount of the required periodic payments including both interest and principal payments.

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- Definition

Amount of the required periodic payments applied to interest.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Note 7 - Notes and Leases Payable (Details Textual) - USD ($)			3 Months Ended		6 Months Ended		12 Months Ended
	Oct. 31, 2014	Sep. 20, 2012	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017	Dec. 31, 2016	Oct. 17, 2017	Oct. 17, 2016
Property, Plant and Equipment, Gross, Ending Balance			$ 9,255,537		$ 9,255,537		$ 9,255,537	$ 9,211,785
Debt Instrument, Periodic Payment, Interest			705	$ 1,216	6,206	$ 2,743	6,365	4,956
Note Payable, Mining Equipment, Purchased in October 2014 [Member]
Debt Instrument, Face Amount	$ 57,900
Debt Instrument, Interest Rate, Stated Percentage	5.20%
Debt Instrument, Periodic Payment, Total	$ 1,339
Debt Instrument, Term	4 years
Note Payable Mining Site Vehicle [Member]
Debt Instrument, Face Amount		$ 37,701
Debt Instrument, Periodic Payment, Total		$ 628					628	628
Debt Instrument, Term		5 years
Note Payable Insurance Company 1 [Member] \| Minimum [Member]
Debt Instrument, Interest Rate, Stated Percentage										2.60%
Note Payable Insurance Company 1 [Member] \| Maximum [Member]
Debt Instrument, Interest Rate, Stated Percentage										4.15%
Note Payable Insurance Company 2 [Member] \| Minimum [Member]
Debt Instrument, Interest Rate, Stated Percentage									3.10%	3.10%
Note Payable Insurance Company 2 [Member] \| Maximum [Member]
Debt Instrument, Interest Rate, Stated Percentage									5.78%	5.78%
Mining Equipment [Member]
Property, Plant and Equipment, Gross, Ending Balance	$ 65,120		$ 1,784,115		$ 1,784,115		$ 1,784,115	$ 1,775,884