Founded in 1852, the Cambria Iron Company of Johnstown made an important contribution to American industrialism - it is considered one of the greatest of the early modern iron and steel works. Forerunner of Bethlehem Steel Company, United States Steel Corporation, and other late 19th and 20th century steel companies, the Cambria plant became a model for the industry. In the late 1800s Johnstown attracted the best and brightest minds in the industry, notably William Kelly, George and John Fritz, Daniel J. Morrell, Robert W. Hunt, William R. Jones, and Alexander Holley. These men advanced iron and steel technology through invention and industrial design in Johnstown, work which was widely copied by other iron and steel companies. This enormous contribution signaled the end of America’s reliance on British-produced rails and allowed the expansion of the nation’s railroad network.