North American Pipe Appoints New GM

Houston, Texas – December 9, 2002 – North American Pipe Corporation, one of the Westlake Group of Companies, has hired John Minelli as their new General Manager.

Mr. Minelli has joined North American Pipe after a long career with Bristolpipe where he rose to the position of President. As General Manager he will assume responsibility for the overall business operation and will report to Mr. Albert Chao, President of the Westlake Group.

North American Pipe is a leading manufacturer and supplier of PVC pipe throughout North America. It produces pipe in a wide range of diameters used in a variety of applications, including irrigation, sewers, conduits, general plumbing. North American is headquartered in Houston, Texas and operates manufacturing facilities in Mississippi, Texas, Illinois, Kentucky and Arkansas.

The Westlake Group is an international manufacturer and supplier of petrochemicals, polymers and fabricated products with headquarters in Houston, Texas. The company's range of products includes ethylene, styrene, propylene, polyethylene, vinyl intermediates, PVC resin and PVC pipe, windows and fence.