Nucor Corporation is the largest steel producer in the US & has over $6.2 billion in sales annually. Nucor is the nation's largest recycler, recycling over 14 million tons of scrap steel annually. Nucor's origins are with auto manufacturer Ransom E. Olds, who founded Oldsmobile & then Reo Motor Cars. Through a series of transactions,the company Olds founded eventually became the Nuclear Corporation of America. Nuclear Corporation was involved in the nuclear instrument & electronics biz in the 1950's & early 1960's. The company suffered through several money-losing years, & when facing bankruptcy in 1964, installed F. Kenneth Iverson as President & Samuel Siegel as VP of Finance. This change in management led to a restructuring & a decision to rebuild the company around the major profitable operations; the steel joist businesses in Florence, South Carolina & Norfolk, Nebraska called Vulcraft.