According to Zacks, "Harsco Corporation is a services and engineered products company. The principal lines of business are: mill services that are provided to steel and non-ferrous metal producers; gas control and containment products; scaffolding services; railway maintenance of way services and equipment; and several other lines of business including, process equipment, industrial grating and bridge decking, industrial pipe fittings, slag abrasives and roofing granules.