6. Properties, Plants and Equipment

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

The Company’s precious metals segment includes properties, plants and equipment in both the United States and Mexico. In the third quarter of 2020, the Company decided not to renew the lease at the Wadley Mining district in Mexico due to continuing low market price for antimony and to reduce Mexican antimony production while seeking other lower cost sources of antimony ore and concentrates. The net carrying value of the mineral lease of $318,502 was recognized as a loss on mineral properties during the year ended December 31, 2020.

In the fourth quarter of 2019, the Company abandoned the Soyatal and Guadalupe mineral properties in Mexico. The net carrying value of the mineral properties of $2,937,259 less the outstanding related notes payable balances, resulted in a loss on mineral properties of $1,410,736 which was recognized during the year ended December 31, 2019.

At December 31, 2020 and 2019, the Company had $755,978 and $1,306,579, respectively, of assets that were not yet placed in service and have not yet been depreciated.