Randy Sutton was promoted to assistant vice president of the Utah audit division of Valley Bank & Trust Co. He has worked for the bank for 12 years, most recently as a systems auditor. Michael Gardner has been appointed plant superintendent of the Salt Lake facilities of Contech Construction Products Inc. He joined the company in 1984 as a production employee. Jennifer Koplin was promoted to senior media planner of Dahlin Smith White Inc. A graduate of Brigham Young University, she has worked for the agency for four years. Scott Hagen has joined the Salt Lake law firm Ray, Quinney & Nebeker. A 1986 graduate of the University of Utah College of Law, he was formerly a trial attorney for the Navy Judge Advocate General's Corps in San Francisco. John Diehl was elected president of the Utah Association of Temporary Services. He is district manager of Kelly Temporary Services. Janet Hirshberg has joined Cellular One as an accounts receivable representative. She was formerly employed by the Federal Reserve Bank.