Daniel J. Gerber

Bison Merger Sub I LLC engages in the provision and supply of proppants and sand products. It operates through the Proppant Solutions; and Industrial & Recreational Products (I&R) segments. The Proppant Solutions predominantly provides sand-based proppants for use in hydraulic fracturing operations through the U.S. and Canada, Argentina, Mexico, China, and northern Europe. The I&R segment provides raw, coated, and custom blended sands to foundry, buildings products, glass, turf and landscape, and filtration industry in North America. The company was founded in 1986 and is headquartered in Chesterland, OH.

Part of Heidelberg Materials AG, Better Materials Corp is a company that mines for and produces crushed stone and asphalt products. The company is based in Penns Park, PA. Better Materials was acquired by Hanson Ltd., a subsidiary of Heidelberg Materials AG from Better Minerals & Aggregates Co. on July 21, 2003 for $158 million.

U.S. Silica Co. engages in the development, production, and supply of industrial silica and products. The company was founded in 1968 and is headquartered in Frederick, MD.

National Industrial Sand Association operates as a non-profit organization that offers industrial sand products. It offers ceramics and refractories; chemical production; construction; filtration and water production; glass production; metal casting; metal production; oil and gas recovery; paint and coatings; and recreational products. The company was founded in November 1935 and is headquartered in Washington, DC.

Fairmount Santrol, Inc. engages in the production of sand and sand-based products used by oil and gas exploration. The firm also provides foundry, building products, water filtration, and oil and gas solutions. The company was founded by William E. Conway in 1978 and is headquartered in Chesterland, OH.