KALU Kaiser Aluminum Corporation

Kaiser Aluminum (NASDAQ: KALU) today announced the extension of a contract with A.M. Castle & Co. to supply aerospace manufacturer Raytheon Aircraft Company with high-quality fabricated aluminum products. The agreement extends an earlier contract to 2010 and calls for an increased supply of high-quality fabricated aluminum sheet and plate products. "We're pleased to extend our collaboration with A.M. Castle & Co. and to further support the production of Raytheon Aircraft Company," said Jack A. Hockema, chairman, president and CEO, Kaiser Aluminum. Kaiser Aluminum's sheet and plate products will be utilized in the production of products for aircraft such as the Hawker 400XP, the Hawker 4000 super-midsize business jet, the Beechcraft Premier IA entry-level business jet, the Beechcraft King Air Series, and the T-6 trainer aircraft. A.M. Castle & Co. is a specialty metals and plastics distribution company serving the North American market, principally within the producer durable equipment sector. Kaiser Aluminum is a leading producer of fabricated aluminum products for aerospace and high-strength, general engineering, and automotive and custom industrial applications. The company has more than 2,000 employees and 11 plants in North America and produces more than 500 million pounds annually of value-added sheet, plate, extrusions, forgings, rod, bar and tube. For more information, visit our Web site at www.kaiseraluminum.com. F-1055 Kaiser Aluminum press releases may contain statements that constitute "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995 involving known and unknown risks and uncertainties that may cause actual results, performance or achievements of the company to be materially different from those expressed or implied. Kaiser Aluminum cautions that such forward-looking statements are not guarantees of future events and that actual events may vary materially from those expressed or implied in the forward-looking statements as a result of various factors. These factors include: (a) changes in the markets served by the company, including aerospace and defense markets; (b) the company's ability to complete its expansion projects as planned and by targeted completion dates; (c) the company's ability to meet contractual commitments and obligations to supply products meeting required specifications; (d) customer performance; (e) developments in technology used by the company, its competitors or its customers; and (f) other risk factors summarized in the company's Annual Report on Form 10-K (for example, see Item 1A. "Business --Risk Factors" and Item 7. "Management's Discussion and Analysis of Financial Condition and Results of Operations") and other reports filed with the Securities and Exchange Commission.