Steel Dynamics, Inc. engages in the production of steel and recycling of metals. It operates through the following segments: Steel Operations, Metals Recycling Operations, Steel Fabrication Operations, and Aluminum Operations. The Steel Operations segment is composed of electric arc furnace (EAF) steel mills, production of steel from ferrous scrap and scrap substitutes, utilization of continuous casting, automation of rolling mills and steel coatings, processing lines, and warehouse operations. The Metals Recycling Operations segment is involved in ferrous and nonferrous scrap metal processing, transportation, marketing, brokerage, and provision of scrap management services. The Steel Fabrication Operations segment includes New Millennium Building Systems plants that serve non-residential construction industry throughout the United States. The Aluminum Operations segment consists of recycled aluminum flat rolled products mill being constructed in Columbus, Mississippi, and satellite recycled aluminum slab centers in Arizona and Mexico. The company was founded by Keith E. Busse, Mark D. Millett, Richard P. Teets, and John C. Bates in 1993 and is headquartered in Fort Wayne, IN.