Background
Mark, Dewey was born in 1927 in Denton, Texas, United States.
Mark, Dewey was born in 1927 in Denton, Texas, United States.
Bachelor of Science, North Texas State University, 1947.
Teacher Paris (Texas) Junior College, Indiana University. With Cosden Petroleum, Big Spring, Texas, 1952-1956, Vickers Petroleum, Witchita, Kansas, 1956-1960, Tenneco Oil Corporation, Houston, 1960-1979, senior vice president marketing, 1979-1982. President Enterprise Companies, Inc., 1979-1982.
Executive vice president, chief operating officer Diamond Shamrock Refining & Marketing, Inc., 1982-1989. President Diamond Shamrock Refining & Marketing, Inc. (now Diamond Shamrock Inc.), since 1989.