Founded in 1982, Progress Rail Services Corporation is one of the largest suppliers of remanufactured locomotive and railcar products and services to the rail industry in North America. Based in Alorton, Ill., the company offers an array of engineering and track products, including rail, relay rail, mobile welders and signals. It also provides a range of locomotive and rail car products, such as axles, bearings, wheels, locomotives and traction motors. Progress Rail Services Corporation renders a variety of services, including rail welding, signal installation, locomotive repair, automobile scrapping and recycling. In addition, the company is a subsidiary of Caterpillar Inc.