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13. Income Taxes (Details 1) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Tax benefit at federal statutory rate	$ (690,229)	$ (771,307)
State income tax effect	(120,541)	(177,435)
Foreign income tax effect	(279,111)	(147,166)
Non-deductible items	151	801
Percentage depletion	(27,667)	(52,416)
Adjustment to prior year tax estimates - Domestic	580,408	(269,906)
Adjustment to prior year tax estimates - Foreign	(137,988)	641,438
Impact on change in federal tax rate	75,899	103,218
Change in valuation allowance - Domestic	(393,380)	926,873
Change in valuation allowance - Foreign	992,458	(254,101)
Total	$ 0	$ 0

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