3. Inventories

6 Months Ended

Jun. 30, 2016

Inventory Disclosure [Abstract]

Inventories

Inventories at June 30, 2016 and December 31, 2015, consisted primarily of finished antimony products, antimony metal, antimony ore, and finished zeolite products that are stated at the lower of first-in, first-out cost or estimated net realizable value. Finished antimony products, antimony metal and finished zeolite products costs include raw materials, direct labor and processing facility overhead costs and freight. Inventory at June 30, 2016 and December 31, 2015, is as follows:

	June 30, 2016		December 31, 2015
Antimony Metal	$	182,839	$	102,207
Antimony Oxide		235,514		332,068
Antimony Concentrates		169,721		133,954
Antimony Ore		160,792		319,631
Total antimony		748,866		887,860
Zeolite		156,836		206,378
	$	905,702	$	1,094,238

During the first quarter of 2015 the Company discovered it had been overcharged for raw material purchases from a vendor. The Company brought the matter to the vendor’s attention and received a $914,967 credit to accounts payable due the vendor that was recorded as a gain on liability adjustment during the six months ended June 30, 2015.