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refining, smelting, fabricating, and recycling. Aluminum and alumina represent more than three-fourths of Alcoa’s revenue. Non-aluminum products include precision castings and aerospace and industrial fasteners. Alcoa’s products are used worldwide in aircraft, automobiles, commercial transportation, packaging, building and construction, oil and gas, defense, and industrial applications. In May 2007 Alcoa made a $27 billion hostile takeover bid for Alcan, a former subsidiary, aiming to unite the two companies and form the world's largest aluminum producer. The takeover bid was withdrawn after Alcan announced a friendly takeover by Rio Tinto in July 2007. Among Alcoa's other businesses are fastening systems, building products (Kawneer) and Howmet Castings. The sale of the packaging unit was announced on December 21, 2007 and closed in the first quarter of 2008. |