REVENUES FROM MINING OPERATIONS AND TRADE RECEIVABLES (Tables)

12 Months Ended

Dec. 31, 2020

REVENUES FROM MINING OPERATIONS AND TRADE RECEIVABLES

Schedule of sales to individual customers that exceeded 10% revenues from mining operations

	Year Ended December 31,
	2020			2019
Customer 1	$	799,405		$	600,171
Customer 2		798,698			504,763
Customer 3		628,940			344,534
Customer 4		419,499			335,755
Customer 5		—			329,804
Total sales to customers exceeding 10.0% of revenues from mining operations	$	2,646,542		$	2,115,027
Percentage of total revenues from mining operations		84.3	%		84.8	%

Schedule of total revenues from mining operations

	Year Ended December 31,
	2020		2019
Revenue from contracts with customers	$	3,137,795	$	2,496,878
Provisional pricing adjustments on concentrate sales		318		(1,986)
Total revenues from mining operations	$	3,138,113	$	2,494,892

Schedule of revenues from contracts with customers by metal

	Year Ended December 31,
	2020		2019
Revenues from contracts with customers:
Gold	$	3,047,019	$	2,392,739
Silver		73,904		73,297
Zinc		2,312		18,128
Copper		14,560		12,714
Total revenues from contracts with customers	$	3,137,795	$	2,496,878