steel dynamics, inc. is unique among american steel companies. founded in 1993, sdi began production at its butler, in, flat roll mill in 1996. this state-of-the-art mill remains a world leader in its productivity and production of flat roll steel. finishing facilities at the butler mill and in jeffersonville, in, produce pickled, cold roll, galvanized, and painted flat roll steel. new millennium building systems, a steel fabrication business producing joists, girders, and decking for nonresidential construction projects, began operations in 2000, and today consists of 6 manufacturing facilities in the u.s. and mexico. sdi entered the steel long-products business in 2002, with the production of wide-flange beams at the company’s minimill in columbia city, in. in 2010, it was expanded to include production of standard rail, and in 2013 the capability for manufacturing premium rail was added. also in 2002, sdi acquired a steel mill near indianapolis to produce engineered bar steel and