The greatest single iron and steel industry in the United States is that of the United States Steel Corporation, which controls the following iron- and steel-producing companies: Carnegie Steel Co., Illinois Steel Co., Indiana Steel Co., American Steel & Wire Co., American Sheet & Tinplate Co., National Tube Co., The National Tube Co. of Ohio, Minnesota Steel Co., The Lorain Steel Co., Tennessee Coal, Iron & Railroad Co., and the Shelby Steel Tube Co., with a total of 124 blast furnaces, having an annual capacity of about 18,000,000 tons of pig iron. Most of the blast furnaces are in Pennsylvania, Ohio, Illinois, and Alabama. With the United States Steel Corporation is connected the Oliver Iron Mining Co., which produces about 43 per cent. of the iron ore mined annually in the Lake Superior district, this being equivalent to nearly 37 per cent. of all the iron ore mined annually in the United States. The Tennessee Coal, Iron & Railroad Co. is the chief producer of iron ore in Alabama. Next in importance to the United States Steel Corporation as a producer of iron and steel is the Bethlehem Steel Corporation, with its subsidiaries, the Bethlehem Steel Co., Pennsylvania Steel Co., Maryland Steel Co., Jurugua Iron Co., Spanish-American Iron Co., and Bethlehem Iron Mines Co. The works of the Bethlehem Steel Corporation have a total pig iron-producing capacity of 3,060,000 tons annually from 23 blast furnaces. Seven of the furnaces are in South Bethlehem, Pa., seven in Steelton, Pa., four in Lebanon, Pa., three in Cornwall, Pa., and four in Sparrow’s Point, Md. The Bethlehem Steel Corporation owns large iron-ore deposits in Cuba and Chile. Most of the ore consumed in its furnaces at present comes from Cuba, from the Lake Superior district, and from Cornwall, Pa. Third in importance of the iron- and steel-producing companies of the United States is the recently organized Midvale Steel & Ordnance Co., controlling Worth Brothers, Midvale Steel Co., Remington Arms Co., Cambria Steel Co., and others. The combined pig iron-producing capacity of the 14 blast furnaces controlled by the Midvale Steel & Ordnance Co. is 2,420,000 tons of pig iron. Three of the blast furnaces are at Coatesville, Pa., and eleven are at Johnstown, Pa. This company owns important iron-ore deposits in Cuba and in the Lake Superior district.