Premcor
From Wikipedia, the free encyclopedia
Premcor (formerly NYSE: PCO) was a Fortune 500 oil refinery group based in Greenwich, Connecticut. It operated four refineries, which are located in Port Arthur, Texas; Memphis, Tennessee; Lima, Ohio; and Delaware City, Delaware with a combined crude oil volume processing capacity of approximately 800,000 barrels per day.
Premcor was acquired by Valero in 2005.