Karyn Ovelmen

The Premcor Refining Group, Inc. provides petroleum refining services. It supplies unbranded transportation fuels, heating oil, petrochemical feedstocks, petroleum coke, and other petroleum products. The company is headquartered in San Antonio, TX.

Lyondell Chemical Co. manufactures and distributes chemicals & plastics, produces fuel products, and refines heavy & high-sulfur crude oil. The company operates in four segments: Ethylene Co-Products and Derivatives, Propylene Oxide & Related Products, Refining, and Inorganic Chemicals. The company's products are used in the clothing, food packaging, household furnishings, automotive parts, construction, home-building materials, paints, and coating industries. The company was founded in 1985 and is headquartered in Houston, TX.

Petroplus Holdings AG engages in crude oil refinery and wholesale marketing of refined petroleum products. It operates through the Refining segment, which includes refining and wholesale marketing operations. It produces and distributes finished products such as gasoline, diesel, heating oil, light and heavy fuel oils, aviation fuels, gasoline components, special purpose liquid fuels, and other petroleum products. Petroplus Holdings AG was founded by Thomas D. O'Malley and Patrick Monteiro de Barros on February 20, 2006 and is headquartered in Zug, Switzerland.