Koppers Inc

Employee size

1,001-5,000

Organization type

Public Company

Headquarters

Pittsburgh, PA

Founded

1988

Koppers Inc. manufactures wood- and carbon-based products and chemicals used to strengthen and extend the life of infrastructure. Its business combines pressure-treated wood products with the conversion of industrial byproducts, including coal tar, into materials used in aluminum and steel production and other applications. The company also provides recovery, research, and carbon-material testing services.

• SJ
  Stella-JonesStella-Jones produces treated wood products for North American infrastructure and construction markets. It supplies more than 12 million pressure-treated wooden crossties annually and treats residential lumber for outdoor applications.PITTSBURGH, PA
• Coopers Creek Chemical CorporationCoopers Creek Chemical Corporation refines crude coal tar, a by-product of metallurgical coke making, into industrial materials and coal-tar-based protective coatings. Based in West Conshohocken, Pennsylvania, the company also produces coatings sold under private-label agreements with some of the world’s largest paint manufacturers.CONSHOHOCKEN, PA
• GS
  Great Southern Wood Preserving, IncorporatedFounded by Jimmy Rane in 1970, Great Southern Wood Preserving began with a small Alabama treatment plant and grew into a wood-products company operating 16 treatment facilities. It is best known for the YellaWood brand of pressure-treated pine and also makes fire-retardant-treated wood and custom industrial packaging. Its business has expanded to include sawmilling, custom packaging manufacturing, material import and export, building-product distribution, and logistics.FOMBELL, PA
• Prime 6Prime 6 turns hardwood waste and forestry residues into high-purity Biocarbon and dense, clean-burning fuels through a proprietary pyrolysis process. Its materials are made for demanding uses ranging from steelmaking and industrial filtration to professional kitchens and soil improvement, with the company emphasizing consistent performance alongside carbon sequestration. Prime 6 also plants a tree for every product sold.