Apr 11, 2008. /Lesprom.com/. Koppers Holdings Inc. intends to release its 1Q 2008 financial results before the opening of the markets on Thursday, May 8, 2008, and to discuss its results on a conference call later that day at 11:00 a.m. EDT. Interested parties may access the live audio broadcast by dialing (888) 810-0248 in the United States/Canada, or +1 (706) 643-9697 for international, and entering Conference ID number 43154940. 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 approximately two hours after the completion of the call at (800) 642-1687 or +1 (706) 645-9291, Conference ID number 43154940. The recording will be available for replay through May 22, 2008. Koppers 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 and China.