Kaiser Aluminum's Chandler Facility Receives Marmon/Keystone Award for ''The Most Improved Supplier''; Facility Receives Second Major Award in Less Than One Year.

FOOTHILL RANCH, Calif. -- Kaiser Aluminum (OTCBB:KALU) today announced the receipt of "The Most Improved Supplier" award for its Chandler, Ariz., facility at Marmon/Keystone's annual Supplier Recognition Day. The Chandler facility's progress in the last year earned them the award out of the more than 40 top suppliers present.

Marmon/Keystone is a leading wholesale distributor of tubular products. The company initiated the Supplier Quality System award process to recognize total supplier quality. In its second year as an honoree at the ceremony, Kaiser Aluminum earned "The Most Improved Supplier" for excelling in standards such as on-time delivery as well as overall quality in packaging and support from inside and outside sales teams. Although Marmon/Keystone's top 40 suppliers from the previous year are invited to participate each year, only one company annually is deemed "The Most Improved Supplier."

"The objective at Kaiser Aluminum is to be the preferred supplier to our customers by delivering best-in-class service and the highest quality fabricated aluminum products," said Jack Hockema, president and chief executive officer, Kaiser Aluminum. "The 'Most Improved Supplier' Award is an indication that we are demonstrating success in these endeavors. We are proud that our Chandler facility has earned such elite recognition for its standards and recent performance."

The Kaiser Aluminum Chandler facility manufactures precision, seamless drawn tube with end use applications for aerospace, sporting goods, medical devices and general engineering applications. Products from the plant are distributed throughout the world. Less than a year ago, the Chandler facility was awarded the 2005 TBM Perfect Engine Award for its commitment to the continuous improvement in manufacturing through the implementation of LeanSigma techniques and standards.

Kaiser Aluminum (OTCBB:KALU) is a leading producer of fabricated aluminum products for aerospace and high-strength, general engineering, automotive, and custom industrial applications. The company has more than 2,000 employees and 11 plants in North America having the capacity to produce more than 400 million pounds annually of value-added sheet, plate, extrusions, forgings, rod, bar, and tube.

A leading distributor of tubular products since 1907, Marmon/Keystone inventories over 15,000 sizes and grades of carbon, alloy, stainless, and aluminum tubular and bar products. Service centers and sales offices are located throughout North America, with corporate offices in Butler, Pa.

Marmon/Keystone and affiliated companies are members of The Marmon Group, an international association of more than 125 companies that operate independently within diverse business sectors. Member companies have collective revenues of nearly $6 billion.

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