Pittsburgh, Pennsylvania, USA, 27 July 2006 -- /PRNewswire/ -- The board of directors of Koppers Holdings Inc. (NYSE:KOP) today declared a quarterly dividend of USD 0.17 per common share, payable 02 October 2006 to stockholders of record on 01 September 2006.

About Koppers

Koppers, with corporate headquarters and a research center in Pittsburgh, Pennsylvania, is a global integrated producer of carbon compounds and treated wood products. Including its joint ventures, Koppers operates facilities in the United States, United Kingdom, Denmark, Australia, China, the Pacific Rim, and South Africa. The stock of Koppers Holdings Inc. is publicly traded on the New York Stock Exchange under the symbol "KOP." For more information, visit www.koppers.com. Questions concerning investor relations should be directed to Michael W. Snyder at 412 227 2131.

Source: Koppers Holdings Inc.