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AMCOL International Corporation operates in five segments: minerals, environmental, oilfield services, transportation and corporate. The Company's minerals segment mines, processes and distributes clays and products with similar applications for use in
Sigma RBI is a Natick, MA-based company in the Agriculture and Mining sector.
Morgan Oil Company is a Bloomfield, IA-based company in the Agriculture and Mining sector.
Ferrous Metal Processing Company is a Cleveland, OH-based company in the Agriculture and Mining sector.
Keystone Coal Co Inc is a Fort Myers, FL-based company in the Agriculture and Mining sector.