He served as the chair of the board, president, and director of Dresser Industries (Cleveland, OH) (now Halliburton).
[3] He joined the United States Army during World War I where he rose to the rank of major.
[4] Mallon served as chair of the board, president, and director of Dresser Industries.
Mallon hired George Herbert Walker Bush to work for Dresser Industries in West Texas shortly after he graduated from Yale University.
Mallon died on March 1, 1983, due to cancer, aged 88, in Dallas, Texas.