Loan Payable (Details 1) - USD ($)	9 Months Ended	12 Months Ended
Sep. 30, 2016	Dec. 31, 2015
Short-term portion	$ 5,175,113	$ 4,942,716
Long-term portion	9,756,674	13,430,107
Komatsu financing agreements [Member] \| Loans Payable [Member]
Total acquisition costs	$ 24,614,468	$ 24,262,031
Average remaining life (Years)	2 years 11 months 23 days	3 years 5 months 16 days
Short-term portion	$ 5,175,113	$ 4,942,716
Long-term portion	$ 9,756,674	$ 13,430,107
Komatsu Mobile Mining Equipment [Member] \| Loans Payable [Member] \| Minimum [Member]
Interest rates	0.00%	0.00%
Monthly payments	$ 4,669	$ 4,669
Komatsu Mobile Mining Equipment [Member] \| Loans Payable [Member] \| Maximum [Member]
Interest rates	4.40%	4.40%
Monthly payments	$ 33,906	$ 33,906

Amount of tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office equipment, acquired at the acquisition date.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472

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- Definition

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

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

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- Definition

Carrying value as of the balance sheet date of portion of long-term loans payable due within one year or the operating cycle if longer.

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- Definition

Carrying value as of the balance sheet date of loans payable (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

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- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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