The Elgin, Joliet and Eastern Railway was a Class II railroad, making a roughly circular path between Waukegan, Illinois and Gary, Indiana. The railroad served as a link between Class I railroads traveling to and from Chicago, although it operated almost entirely within the city's suburbs, only entering Chicago where it served the U.S. Steel South Works on the shores of Lake Michigan. Nicknames for the railroad included "The J" and "The Chicago Outer Belt Line". At the end of 1970, the EJ&E operated 164 miles of track and carried 848 million ton-miles of revenue freight in that year alone.

United States Steel Corporation, more commonly known as U.S. Steel, is an American integrated steel producer headquartered in Pittsburgh, Pennsylvania, with production operations primarily in the United States of America and in Central Europe. The company produces and sells steel products, including flat-rolled and tubular products for customers in industries across automotive, construction, consumer, electrical, industrial equipment, distribution, and energy. Operations also include iron ore and coke production facilities.