6. Properties, Plants and Equipment (Tables)

12 Months Ended

Dec. 31, 2020

Property, Plant and Equipment [Abstract]

Properties, Plants and Equipment

The major components of the Company's properties, plants and equipment by segment at December 31, 2020 and 2019 are shown below:

	Antimony Segment						Zeolite Segment			Precious Metals
2020	USAC			USAMSA			BRZ			Segment			TOTAL
Plant and equipment	$	815,737		$	8,757,775		$	3,743,051		$	1,266,697		$	14,583,260
Buildings		247,210			613,449			410,780			-			1,271,439
Mineral rights and interests		-			828,523			3,664			-			832,187
Land and other		3,274,572			2,478,044			15,310			-			5,767,926
		4,337,519			12,677,791			4,172,805			1,266,697			22,454,812
Accumulated depreciation		(2,699,781	)		(5,042,381	)		(3,154,244	)		(332,812	)		(11,229,218	)
	$	1,637,738		$	7,635,410		$	1,018,561		$	933,885		$	11,225,594

	Antimony Segment						Zeolite Segment			Precious Metals
2019	USAC			USAMSA			BRZ			Segment			TOTAL
Plant and equipment	$	783,290		$	9,164,600		$	3,729,061		$	813,714		$	14,490,665
Buildings		247,210			902,707			410,780			-			1,560,697
Mineral rights and interests		-			816,786			3,664			-			820,450
Land and other		3,274,572			2,529,294			15,310			-			5,819,176
		4,305,072			13,413,387			4,158,815			813,714			22,690,988
Accumulated depreciation		(2,673,972	)		(4,612,567	)		(2,971,625	)		(245,976	)		(10,504,140	)
	$	1,631,100		$	8,800,820		$	1,187,190		$	567,738		$	12,186,848

United States and Mexico components of properties, plants and equipment:

	2020		2019
United States	$	2,787,181	$	2,961,895
Mexico		8,438,413		9,224,953
Total	$	11,225,594	$	12,186,848