Steel Dynamics, Inc. is a diversified domestic steel producers and metals recycler. The Company's segments include Steel Operations, Metals Recycling Operations, and Steel Fabrication Operations. The Steel Operations segment include the Company’s six operating electric arc furnace steel mills, including Butler Flat Roll Division, Columbus Flat Roll Division, Structural and Rail Division, Engineered Bar Products Division, Roanoke Bar Division, and Steel of West Virginia, and its under construction Southwest-Sinton Flat Roll Division; steel coating and processing operations, Heartland Flat Roll Division, United Steel Supply (USS), and Vulcan Threaded Products, Inc. The Metals Recycling Operations Segment includes the OmniSource ferrous and nonferrous processing, transportation, brokerage, and scrap management services. The Steel Fabrication Operations Segment includes the New Millennium Building Systems joist and deck plants located throughout the United States, and in Northern Mexico.