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Koppers Holdings Inc. Schedules Year-End 2005 Conference Call
February 28, 2006 at 4:47 PM EST

Feb 28, 2006 /PRNewswire-FirstCall via COMTEX News Network/ -- Koppers Holdings Inc. (NYSE: KOP) will release its full-year 2005 financial results before the opening of the markets on Thursday, March 9, and will discuss its results on a conference call later that morning at 11:00 AM EST.

Investors and bondholders may access the live audio broadcast by dialing 888 810 0248 in the US/Canada or 706 643 9697 for International, Conference ID number 5853542. Investors are requested to access the call at least five minutes before the scheduled start time in order to complete a brief registration. An audio replay will be available two hours after the call's completion at 800 642 1687 or 706 645 9291, Conference ID number 5853542. The recording will be available for replay through April 9, 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 us on the web: http://www.koppers.com. Questions concerning investor relations should be directed to Brian H. McCurrie at 412 227 2153.

SOURCE Koppers Holdings Inc.

Brian H. McCurrie, Vice President, Chief Financial Officer of Koppers Holdings Inc., +1-412-227-2153, or McCurrieBH@koppers.com