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El Tigre Silver Corp. engages in the acquisition, exploration, and development of precious metals properties in Mexico. The company primarily explores for gold, silver, lead, copper, zinc, and PGM resource properties. It focuses on its 100% owned El Tigre Silver Property, which consists of eight exploration mining concessions covering 43,166 hectare land package located in Sonora, Mexico, as well as holds one additional 32 hectare claim separate from the El Tigre Silver Property. The company was formerly known as Herdron Capital Corp. and changed its name to El Tigre Silver Corp. in March 2010. El Tigre Silver Corp. was incorporated in 2007 and is headquartered in Vancouver, Canada.
White County Coal Corp is a Carmi, IL-based company in the Agriculture and Mining sector.
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.
Tombill owns various royalty-free mineral exploration and past-producing gold properties in the Geraldton and Beardmore Camp, Ontario. The Company`s business is mineral exploration, primarily gold. It has 74 claims: 60 are owned and patented, five leased, and nine where it owns the mineral rights. Of these, the Tombill Main Group property comprises 58 claims: 54 owned patents, and four owned mineral rights. The Tombill Main Group claims were originally staked in the first Geraldton Gold Rush in the 1930`s by Tom Johnson and his brother Bill.
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