The group's principal activity is steel manufacturing. The group produces steel primarily from steel scrap using electric arc melting furnaces, continuous casting and automated rolling mills. The group owns and operates three steelmaking mini-mills. The group produces a broad range of hot rolled, cold rolled and coated steel products. The group has two reportable segments: steel operations and steel scrap substitute operations. The steel operations segment includes flat roll division, structural and rail division, and bar division. Steel scrap substitute operations include the revenues and expenses associated with the company's wholly owned subsidiary iron dynamics. The group's products are used in the automotive, construction and commercial industries.