2010 Bentonite Operations
Company Name	Mine	# of Employees	Production (Tons)
American Colloid Company	Lovell Mill	62	552,654
American Colloid Company	Yellowtail Mine	20	844,084
American Colloid Company	Colony East Mine	39	646,625
American Colloid Company	Colony West Mine	48	435,603
Bentonite Performance Materials, LLC	BPM Colony Mill	83	434,326
Bentonite Performance Materials, LLC	BPM Colony Mine	19	625,970
Bentonite Performance Materials, LLC	BPM Lovell Mine	7	625,970
Bentonite Performance Materials, LLC	BPM Lovell Mill	65	689,988
Black Hills Bentonite	Kaycee Mine	13	506,034
Black Hills Bentonite	Oshoto Mine	4	96,755
Black Hills Bentonite	Ten Sleep Mine	9	131,831
Black Hills Bentonite	Thornton Plant	8	87,160
Black Hills Bentonite	Mills Plant	28	94,560
Black Hills Bentonite	Harry Thorson Plant	14	164,296
Black Hills Bentonite	Casper Plant	19	206,358
Black Hills Bentonite	Worland Plant	11	135,776
M-I SWACO	M-I SWACO Mill	60	509,158
M-I SWACO	M-I SWACO Mine	53	509,158
US Bentonite Processing	Bucknum	11	4,600
Wyo-Ben, Inc.	Lucerne Mill	15	88,933
Wyo-Ben, Inc.	Stucco Mill	39	246,829
Wyo-Ben, Inc.	Stucco Mine	10	546,718
Wyo-Ben, Inc.	Sage Creek Mine	29	166,824
TOTALS		666	Plant: 4,459,153
			Mine: 4,041,440