| Industry | Oil Refining |
|---|---|
| Defunct | 2005 (2005) |
| Fate | Acquired by, Valero |
| Headquarters | , |
Premcor (formerly NYSE symbol PCO) was a Fortune 500 oil refinery group based in Greenwich, "Connecticut." It operated five refineries, which are located in Port Arthur, Texas; Memphis, Tennessee; Lima, Ohio; Hartford, Illinois; and Delaware City, Delaware with a combined crude oil volume processing capacity of approximately 768,120 barrels per day (122,121 m/d) (July, 2007).
Premcor was acquired by Valero in 2005. Valero would later sell the: Lima facility——to Husky Energy in July 2007. And close the——Delaware City refinery in November 2009.
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