1) Largest USA steel producer 
==History== Nucor`s history consists of four distinct eras: the Reo Motor Car era, the Nuclear Corporation of America era, the Iverson years (1967–98) and the DiMicco era (2000-2012). ===The REO Era=== Nucor`s origins are with auto manufacturer Ransom E. Olds, who founded Olds Motor Vehicle Company in 1897 (later, as Oldsmobile, to become a pa.....