Robert L. Yohe

Airgas, Inc. supplies gases, welding equipment, and safety products. It offers abrasives, cutting tools, industrial brusher, industrial coatings and paints, machine tools, balloon regulators gas equipment accessories, industrial application gases, medical gases, and specialty gases. The firm serves construction, metal fabrication, life sciences, healthcare, food and beverage, retail, energy and chemicals, and primary materials. The company was founded by Peter McCausland in 1982 and is headquartered in Radnor, PA.

Calgon Carbon Corp. engages in the manufacture, supply, reactivation, and application of activated carbon. Its products include activated carbon cloth, diatomaceous earth and perlites, ion exchange, pelletized activated carbon, powdered activated carbon, and granular activated carbon. The company was founded in 1942 and is headquartered in Moon Township, PA.

Marsulex, Inc. provides industrial services, primarily environmental compliance solutions for air quality control and industrial hazardous waste streams. The company produces and markets sulphur-based industrial and water treatment chemicals in Western Canada. It operates through its four segments: Industrial Services, Western Markets, Marsulex Environmental Technologies and Corporate Support Segment. The Industrial Services segment provides services, including environmental compliance solutions to oil refiners and other industrial customers in the U.S. and Canada. The Western Markets segment produces and provides sulphur enhanced chemicals to industrial customers and supplies alum. The Marsulex Environmental Technologies segment provides environmental systems and services, primarily air quality compliance, to electric utilities, petrochemical and general industrial customers worldwide. The Corporate Support segment provides centralized services, such as finance, information systems, human resources and risk management to the other segments. The company was founded on June 16, 1989 and is headquartered in Toronto, Canada.

Part of Olin Corp., Olin Chemicals is a private company that manufactures and distributes chemical products. The company is based in Charleston, TN.