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U.S. Silica Holdings Inc. is a global performance materials company and is a member of the Russell 2000. The company is a leading producer of commercial silica used in the oil and gas industry and in a wide range of industrial applications. Over its 123-year history, U.S. Silica has developed core competencies in mining, processing, logistics and materials science that enable it to produce and cost-effectively deliver more than 600 diversified products to customers across our end markets. U.S. Silica`s wholly-owned subsidiaries include EP Minerals and SandBox Logistics™. EP Minerals is an industry leader in the production of products derived from diatomaceous earth, perlite, engineered clays and non-activated clays. SandBox Logistics™ is a state-of-the-art leader in proppant storage, handling and well-site delivery, and is dedicated to making proppant logistics cleaner, safer and more efficient. The company has 27 operating mines and processing facilities and two additional exploration stage properties across the United States and is headquartered in Katy, Texas.
Goldbrook Ventures Inc. is a Vancouver, BC-based company in the Agriculture and Mining sector.
Abitibi Geophysics is a Val-D'Or, QC-based company in the Agriculture and Mining sector.
Johnson Ventures II Inc is a Columbus, IN-based company in the Agriculture and Mining sector.
Canam Coal is a coal producer and development company focused on growth through the acquisition, exploration and development of coal resources and resource-related technologies. CanAm`s main activities and assets include its four operating coal mines in Alabama and the Buick Coal Project which holds significant coal resources, 188 million indicated and 103 million inferred resources, in Colorado, USA (see the technical report entitled "Limon Lignite Project, Elbert County, Colorado, USA," dated October 26, 2007 and filed on SEDAR on November 2, 2007). Other coal and related opportunities continue to be evaluated on an ongoing basis.