Chevron Pascagoula Refinery celebrated its 57th anniversary in 2020. Since beginning operation in 1963, the refinery has grown to be the corporation’s largest U.S. refinery and one of the top petroleum refineries in the United States. We manufacture fuels and other products sold by our marketing, lubricants, and supply and trading organizations under the Chevron®, Texaco® and Caltex® brands.