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Long-Term Reclamation Liability (Tables)

6 Months Ended

Jun. 30, 2018

Asset Retirement Obligation Disclosure [Abstract]

Reconciliation of the Aggregate Reclamation Liability

Following is a reconciliation of the aggregate reclamation liability associated with our reclamation plan for our mining projects:

	Six Months Ended				Twelve Months  Ended
	June 30, 2018				December 31, 2017
Long-term reclamation liability — beginning of period	$	7,417,680			$	7,353,346
Additional obligations incurred	—				—
Accretion of reclamation liability	11,054				64,334
Long-term reclamation liability — end of period	$	7,428,734			$	7,417,680

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Schedule of Other Noncurrent Liabilities [Table Text Block]

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