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14. Income Taxes (Details 1) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Tax benefit at federal statutory rate	$ (771,307)	$ 113,588
State income tax effect	(177,435)	12,602
Foreign income tax effect	(147,166)	(102,078)
Non-deductible items	801	492
Percentage depletion	(52,416)	(47,341)
Adjustment to prior year tax estimates - Domestic	(269,906)	0
Adjustment to prior year tax estimates - Foreign	641,438	0
Impact on change in federal tax rate	103,218	0
Change in valuation allowance - Domestic	926,873	(295,984)
Change in valuation allowance - Foreign	(254,101)	318,721
Foreign tax assessment (benefit)	0	(332,332)
Total	$ 0	$ (332,332)

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