X0101 EFFECT 33 LIVE 2010-05-12 17:30:00

S-4

0000916075 KOPPERS INC 333-165108 0001315257 Koppers Holdings Inc. 333-165108-07 0001275824 WORLD WIDE VENTURES CORP 333-165108-06 0001275822 KOPPERS CONCRETE PRODUCTS INC 333-165108-05 0001275821 CONCRETE PARTNERS INC 333-165108-04 0001053719 KOPPERS DELAWARE INC 333-165108-03 0001470295 Koppers Asia LLC 333-165108-02 0001485585 Koppers Ventures LLC 333-165108-01