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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
Madison Block and stone is a Madison, WI-based company in the Agriculture and Mining sector.
Jackson Development Co is a Hamlin, WV-based company in the Agriculture and Mining sector.
The North American Coal Corporation, a subsidiary of NACCO Industries, Inc. (NYSE:NC), mines and markets lignite coal primarily as fuel for power generation and provides selected value-added mining services for other natural resources companies
Geodex Minerals Ltd. (TSX.V: GXM) is a Canadian-based resource company with a focus on the consolidation of past-producing and producing Antimony and Tin mines in Canada and Internationally. Geodex maintains its commitment to also pursuing Tungsten and Indium. Tungsten, in particular, frequently appears in mineralisations with Tin (and Tantalum). The geology of the Maritime Provinces is notably prospective for a number of critical metals, including Tungsten, Tin and Antimony.