The Inland Steel Company was a U.S. steel company active in 1893-1998. Its history as an independent firm thus spanned much of the 20th century. It was headquartered in Chicago at the landmark Inland Steel Building.
Inland Steel was an integrated steel company that reduced iron ore to steel. Its sole steel mill was located in East Chicago, Indiana, on the Indiana Harbor and Ship Canal and a large landfill protruding out into Lake Michigan. The steel mill's shoreline location enabled it to take in steelmaking commodities, such as iron ore, coal, and limestone, by lake freighter. Throughout much of its life, Inland Steel operated its own fleet of bulk carrier vessels.
Inland Steel was founded in 1893 through the purchase, by financier Philip Block, of a small failed Chicago Heights, Illinois steel mill, Chicago Steel Works. The Block family led Inland Steel's recovery and, in 1901, Inland Steel pledged to raise more than $1.0 million to build an open-hearth mill in East Chicago. This expansion caused the firm to grow more than tenfold in size, from 250 workers in 1897 to 2,600 in 1910.
Inland Steel continued to face heavy competition from U.S. Steel, the Pittsburgh-based giant that at that time possessed a dominant share of the U.S. steel market. World wars increased steel demand and pushed Inland Steel forward. In 1917 (World War I), Inland Steel's production broke the 1.0-million ton (0.9m tonne) mark for the first time; and in 1930 the firm completed a new office headquarters in East Chicago, which survives. By World War II the Chicago-area steelmaker had 14,000 employees and was producing 3.4 million tons (3.0m tonnes) per year.
Starting in the 1950s, Inland Steel specialized in cold-rolled sheet and strip steel for motor vehicles. In 1956-1957, the successful firm constructed a new corporate headquarters, the Inland Steel Building, in downtown Chicago. Employment at the Indiana Harbor mill rose toward its peak of 25,000 in 1969.