Koppers and Mittal Steel USA have agreed to a 3 year contract in which Koppers will sell 100% of its furnace coke production to Mittal Steel. The current 3 year contract with Mittal expires on December 31, 2006. The initial term of the new contract is January 1, 2007 through December 31, 2009. The contract also includes certain provisions which allow the term to be extended beyond the3 year period.

Mr Walter W Turner president and CEO of Koppers said "We are very pleased to be able to continue to partner with Mittal Steel in regard to all of our furnace coke production."

Koppers produces furnace coke at its facility in Monessen in Pennsylvania, which has an annual capacity of approximately 360,000 net tons of furnace coke. Koppers is also a producer of carbon compounds and treated wood products that increase the durability and decay resistance of rubber, steel and aluminum.