Stevan R. Schott

Duquesne Light Holdings, Inc. engages in the generation, transmission, distribution, and sale of electric energy through its subsidiaries. The company was founded in 1989 and is headquartered in Pittsburgh, PA.

Duquesne Light Co. produces and supplies electricity. The company is headquartered in Pittsburgh, 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.

DQE, Inc. provides healthcare equipment. Its products include decontamination equipment, decon accessories, emergency lighting and medical supplies, hospital incident command supplies, infection control products, mass care beds, personal protective equipment and custom products. The firm offers services include decontamination training, hospital evacuation training and development. The company was founded by Howard Levitin in 1990 and is headquartered in Indianapolis, IN.

Deloitte & Touche LLP engages in the provision of audit, advisory, financial advisory, tax, and consulting services. The company was founded on March 7, 1995 and is headquartered in New York, NY.

Chemviron SA is a leading manufacturer and supplier of activated carbons, filter aids, innovative treatment systems, and services for optimizing production processes and safely purifying the environment. Chemviron has a dedicated facility for food/drinking water or industrial/environmental spent carbon reactivation located in Feluy, Belgium, and the UK. The private company is based in Seneffe, Belgium. The Belgian company offers over 100 different types of activated carbon for various applications, including drinking water, wastewater, sweetener, pharmaceutical, air and gas purification. The company is committed to sustainability and recycling spent material to protect natural resources and reduce carbon dioxide emissions. Reinier Pieter Keijzer has been the CEO of the company since 2017.