6. Properties, Plants and Equipment (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Plant and equipment	$ 13,693,105	$ 12,728,239
Buildings	1,539,507	1,498,148
Mineral Rights and Interests	3,797,166	3,797,166
Land & Other	5,819,176	5,819,176
Total	24,848,954	23,842,729
Accumulated Depreciation	(9,621,782)	(8,709,832)
Properties, plants and equipment, net	15,227,172	15,132,897
USAC
Plant and equipment	743,767	743,767
Buildings	247,210	247,210
Mineral Rights and Interests	0	0
Land & Other	3,274,572	3,274,572
Total	4,265,549	4,265,549
Accumulated Depreciation	(2,630,234)	(2,577,552)
Properties, plants and equipment, net	1,635,315	1,687,997
USAMSA
Plant and equipment	8,466,461	7,655,777
Buildings	900,992	900,992
Mineral Rights and Interests	3,793,502	3,793,502
Land & Other	2,529,294	2,529,294
Total	15,690,249	14,879,565
Accumulated Depreciation	(4,029,480)	(3,427,058)
Properties, plants and equipment, net	11,660,769	11,452,507
BRZ
Plant and equipment	3,690,249	3,577,055
Buildings	391,305	349,946
Mineral Rights and Interests	3,664	3,664
Land & Other	15,310	15,310
Total	4,100,528	3,945,975
Accumulated Depreciation	(2,785,159)	(2,596,356)
Properties, plants and equipment, net	1,315,369	1,349,619
Precious Metals [Member]
Plant and equipment	792,628	751,640
Buildings	0	0
Mineral Rights and Interests	0	0
Land & Other	0	0
Total	792,628	751,640
Accumulated Depreciation	(176,909)	(108,866)
Properties, plants and equipment, net	$ 615,719	$ 642,774