Harsco Corporation provides industrial mill services to steel and nonferrous metal producers in the U.S. and internationally. It also supplies gas-control and gas-containment products, scaffolding to the industrial maintenance and construction markets, and railway maintenance-of-way equipment and services. Harsco's other businesses include providing process equipment, industrial grating, and slag abrasives. The company was founded in 1853 and is based in Camp Hill, PA.