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Coastal Corporation was a diversified energy and petroleum products company headquartered at 9 Greenway Plaza (Coastal Tower) in Greenway Plaza, Houston, Texas. The company was founded in 1955 by Oscar Wyatt and incorporated in 1955 as Coastal States Gas Producing Company. It was a major energy producer when it merged with the El Paso corporation in 2001. As of 1999, Coastal was a Fortune 500 company with 13,300 employees and annual Revenues of $8.2 billion.