4. Revenue Recognition

6 Months Ended

Jun. 30, 2020

Revenue from Contract with Customer [Abstract]

Revenue Recognition

Products consist of the following:

● Antimony: includes antimony oxide, sodium antimonate, antimony trisulfide, and antimony metal

● Zeolite: includes coarse and fine zeolite crushed in various sizes

● Precious Metals: includes unrefined and refined gold and silver

Sales of products for the three and six month periods ended June 30, 2020 and 2019, were as follows:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2020		2019		2020		2019
Antimony	$	910,484	$	1,507,588	$	2,031,909	$	3,213,411
Zeolite		612,715		704,172		1,172,075		1,430,187
Precious metals		61,992		60,523		124,198		85,050
	$	1,585,191	$	2,272,283	$	3,328,182	$	4,728,648

The following is sales information by geographic area based on the location of customers for the three and six month periodss ended June 30, 2020 and 2019:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2020		2019		2020		2019
United States	$	1,436,047	$	1,819,707	$	3,002,284	$	3,928,276
Canada		149,144		139,523		325,898		326,780
Mexico		-		313,053		-		473,592
	$	1,585,191	$	2,272,283	$	3,328,182	$	4,728,648

Sales of products to significant customers were as follows for the three and six month periods ended June 30, 2020 and 2019:

	For the Three Months Ended						For the Six Months Ended
	June 30, 2020			June 30, 2019			June 30, 2020			June 30, 2019
Mexichem Speciality Compounds				$	375,514		$	523,660		$	1,059,525
Nyacol Nanotechnologies					267,638			-			404,324
Kohler Corporation					454,943			-			913,037
GE Chaplin, Inc	$	176,081			-			290,372			-
Comerce Industrial Chemical		148,019			-			-			-
ZEO, Inc.		231,010			-			374,102			-
	$	555,110		$	1,098,095		$	1,188,134		$	2,376,886
% of Total Revenues		35.00	%		48.33	%		35.70	%		50.27	%

Accounts receivable from largest customers were as follows at June 30, 2020 and December 31, 2019:

Largest Accounts Receivable	June 30, 2020			December 31, 2019
Nutreco Canada Inc.				$	21,219
Zeo Inc.	$	21,633			-
RyMar Synthetic Grass		20,710			-
Lake Shore Gold		-			27,854
Teck North America Inc.		93,100			-
Commerce Industrial Chemical		-			54,684
	$	135,443		$	103,757
% of Total Receivables		58.00	%		36.48	%

Our trade accounts receivable balance related to contracts with customers was $233,636 at June 30, 2020 and $284,453 at December 31, 2019. Our products do not involve any warranty agreements and product returns are not typical.