Harsco Corporation provides industrial services and engineered products worldwide. It operates in three segments: Harsco Metals & Minerals, Harsco Industrial, and Harsco Rail. The Harsco Metals & Minerals segment offers on-site services of material logistics, product quality improvement, and resource recovery for iron, steel, and metals manufacturing; and value added environmental solutions for industrial co-products, as well as produces industrial abrasives and roofing granules. It serves steel mills and asphalt roofing manufacturers. The Harsco Industrial segment manufactures and supplies custom-engineered and manufactured air-cooled heat exchangers for the natural gas, natural gas processing, and petrochemical industries; and industrial grating products, such as metal bar grating configurations for industrial flooring, and safety and security applications in the energy, paper, chemical, refining, and processing industries. It also provides heat transfer products, such as boilers and water heaters for commercial and institutional applications; and high-security fencing products. The Harsco Rail segment offers equipment, after-market parts, and services for the maintenance, repair, and construction of railway track. It manufactures and sells highly-engineered railway track maintenance equipment, and collision avoidance and warning systems to support passenger, rail worker, and pedestrian safety, as well as measurement and diagnostic technologies that support railway maintenance programs. This segment serves private and government-owned railroads, and urban mass transit systems. The company was founded in 1853 and is headquartered in Camp Hill, Pennsylvania.