Douglas Dietrich

AMCOL International Corp. produces value-added, specialty minerals, and related product. The company was founded on December 30, 1959 and is headquartered in Hoffman Estates, IL.

Alcoa, Inc. engages in the lightweight metals engineering and manufacturing. Its products are used worldwide in aircraft, automobiles, commercial transportation, packaging, oil and gas, defense, and industrial applications. It operates through the following segments: Alumina; Primary Metals; Global Rolled Products; Engineered Products and Solutions; and Transportation and Construction Solutions. The Alumina segment consists of a portion of Alcoa's upstream operations and consists of the company's worldwide refinery system, including the mining of bauxite, which is then refined into alumina. The Primary Metals segment comprises of Alcoa's upstream operations and consists of the company's worldwide smelter system. The Global Rolled Products segment is involved in the production and sale of aluminum plate, sheet and foil. The Engineered Products and Solutions segment involves in the production and sale of titanium, aluminum, and super alloy investment castings, hard alloy extrusions, forgings and fasteners, aluminum wheels, integrated aluminum structural systems, and architectural extrusions. The Transportation and Construction Solutions segment engages in downstream operations and produces products that are used mostly in the nonresidential building and construction and commercial transportation end markets. The company was founded by Charles Martin Hall on October 1, 1888 and is headquartered in New York, NY.

Colloid Environmental Technologies Co. LLC provides industrial applications, concrete waterproofing for underground structures, lining systems for liquid containment, and non-oil and gas related drilling applications. It offers building materials, environmental and drilling products. The company is headquartered in Hoffman Estates, IL.