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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
Tango Gold Mines Incorporated engages in the acquisition, exploration, and development of precious metal properties in the Republic of Nicaragua, Central America. Its principal property includes the Topacio concession, a gold exploration project that covers an area of approximately 9,300 hectares located in the South Atlantic Autonomous Region of the Republic of Nicaragua. The company was formerly known as F.D.G. Mining Inc. and changed its name to Tango Gold Mines Incorporated in May 2013. Tango Gold Mines Incorporated is based in Toronto, Canada.
Jeffrey Sand Co is a North Little Rock, AR-based company in the Agriculture and Mining sector.
Custom Products is a Van Nuys, CA-based company in the Agriculture and Mining sector.
Griswold Concrete is a Jacksonville, FL-based company in the Agriculture and Mining sector.