Harvard University Press, 1962. H. Lee Scamehorn, Mill & Mine: The Cf&I in the Twentieth Century. University of Nebraska Press, 1992. Warren, Kenneth, Big Steel: The First Century of the United States Steel Corporation, 1901–2001. University of Pittsburgh Press, 2001. External links Official website of the World Steel Association (worldsteel) steeluniversity.org: Online steel education resources, an initiative of World Steel Association Metallurgy for the Non-Metallurgist from the American Society for Metals MATDAT Database of Properties of Unalloyed, Low-Alloy and High-Alloy Steels – obtained from published results of material testing 2nd-millennium BC introductions Building materials Roofing materials