Revenue from Contracts with Customers Revenue from Contracts with Customers (Tables)

6 Months Ended

Jun. 30, 2021

The Company’s portfolio of products is integrated into a variety of end uses, which are described in the table below.


Key End Uses			Key Products
Industrial & process chemicals			• Sulfur derivatives for industrial production
			• Treatment services
Fuels & emission control			• Refining catalysts
			• Emission control catalysts
			• Catalyst recycling services
Packaging & engineered plastics			• Catalysts for high-density polyethylene and chemicals syntheses
			• Antiblock for film packaging
			• Sulfur derivatives for nylon production
Natural resources			• Sulfur derivatives for mining

The following tables disaggregate the Company’s sales, by segment and end use, for the three and six months ended June 30, 2021 and 2020:


	Three months ended June 30, 2021
	Ecoservices		Silica Catalysts		Total
Industrial & process chemicals	$	18,341	$	—	$	18,341
Fuels & emission control(1)	68,794		—		68,794
Packaging & engineered plastics	14,979		26,215		41,194


Natural resources	18,627		—		18,627
Total segment sales	$	120,741	$	26,215	$	146,956
Eliminations	(4)		—		(4)
Total	$	120,737	$	26,215	$	146,952

	Three months ended June 30, 2020
	Ecoservices		Silica Catalysts		Total
Industrial & process chemicals	$	16,713	$	2	$	16,715
Fuels & emission control(1)	50,682		—		50,682
Packaging & engineered plastics	7,473		25,206		32,679


Natural resources	15,565		—		15,565
Total segment sales	$	90,433	$	25,208	$	115,641


	Six months ended June 30, 2021
	Ecoservices		Silica Catalysts		Total
Industrial & process chemicals	$	35,288	$	—	$	35,288
Fuels & emission control(1)	123,987		—		123,987
Packaging & engineered plastics	25,600		52,617		78,217


Natural resources	36,088		—		36,088
Total segment sales	$	220,963	$	52,617	$	273,580
Eliminations	(4)		—		(4)
Total	$	220,959	$	52,617	$	273,576

	Six months ended June 30, 2020
	Ecoservices		Silica Catalysts		Total
Industrial & process chemicals	$	36,072	$	49	$	36,121
Fuels & emission control(1)	106,393		—		106,393
Packaging & engineered plastics	18,206		50,023		68,229


Natural resources	30,452		—		30,452
Total segment sales	$	191,123	$	50,072	$	241,195

(1)As described in Note 1, the Company experiences seasonal sales fluctuations to customers in the fuels & emission control end use.