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Gary Morrison is president of the minerals unit, American Colloid Co. Morrison joined American Colloid Co. in 1981 as a sales representative for the Petroleum Products Group. He was promoted to manager of the Metalcasting Products Group in 1988 and appointed vice president in 1994. In 1998, Morrison was promoted to executive vice president. He has a bachelor's degree in biology and chemistry from Abilene Christian University in Abilene, Texas. | 