Henry Bessemer discovered how to turn iron into steel; engineers in the United States used steel to transform the nation. This History Channel video surveys steelmaking in the United States, from steel manufacturing through its use in rails, trains, ship s, planes, automobiles and skyscrapers. The financial empires of Carnegie and Morgan, built on steel, are noted, along with labor-management conflicts, the American steel industry decline in the 1970s and its revival in the 1990s. Filmmaker Chuck Hayes; narrator Earl Boen. A&E Television Networks.