Superior Aluminum Alloys is a secondary-aluminum smelting producer, manufacturing approximately 260 million pounds per year of certified aluminum alloys in the form of ingots, sows, deox cones, and molten metal. The unit was formed by OmniSource in 1998 and has rapidly developed an outstanding reputation in the secondary-aluminum industry.The Supplier of the Year winners are chosen by a global team of GM purchasing, engineering, quality, manufacturing and logistics executives. About Steel Dynamics, Inc. Steel Dynamics, Inc. is one of the largest domestic steel producers and metals recyclers in the United States based on estimated annual steelmaking and metals recycling capability, with annual sales of $7.3 billion in 2012, over 6,600 employees, and manufacturing facilities primarily located throughout the United States (including five steel mills, six steel processing facilities, two iron production facilities, over 70 metals recycling locations and six steel fabrication plants). About General Motors Co . General Motors Co. (NYSE: GM, TSX: GMM) and its partners produce vehicles in 30 countries, and the company has leadership positions in the world's largest and fastest-growing automotive markets. GM's brands include Chevrolet and Cadillac, as well as Baojun, Buick, GMC, Holden, Isuzu, Jiefang, Opel, Vauxhall and Wuling. More information on the company and its subsidiaries, including OnStar, a global leader in vehicle safety, security and information services, can be found at http://www.gm.com. SOURCE Steel Dynamics, Inc.