Philadelphia-based Harsco Corporation is a provider of environmental solutions for both domestic and international industrial and specialty waste streams. The company operates via two segments: Harsco Environmental and Harsco Clean Earth. Harsco Environmental offers material logistics, resource recovery and product quality improvement on site under long-term contracts for steel, iron and metals production. Additionally, the unit manufactures and sells industrial abrasives, roofing granules, scrap-processing systems, and aluminum dross. Harsco Clean Earth provides specialized waste processing, recycling, and beneficial reuse solutions for clients seeking to offload hazardous, non-hazardous, or contaminated materials. Harsco was established in 1853.