Kaiser Aluminum Schedules First Quarter 2007 Earnings Release Date and Conference Call for Tuesday, May 15

Kaiser Aluminum (NASDAQ:KALU), a leading producer of high-quality fabricated aluminum products, has scheduled its first quarter earnings release and conference call for Tuesday, May 15, 2007. The company expects to issue the earnings press release before the market opens with a conference call to discuss the results commencing at 1:00 PM EDT.

What:

Kaiser Aluminum’s First Quarter Earnings Conference Call

When:

Tuesday, May 15, 2007 at 1:00 p.m. EDT

Where:

Participate directly via conference call at (800) 819-9193 or at the company’s Web site at http://www.kaiseraluminum.com in the Investor Relations section

An audio archive will be available on the company’s Web site following the call.

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, please visit our Web site at www.kaiseraluminum.com.