MDU Resources Group, Inc. (NYSE:MDU) today announced that Mark A. Hellerstein and William E. McCracken have been elected to the company’s board of directors, effective August 1. “Mark and Bill bring a tremendous depth of senior leadership experience, both in the executive office and the boardroom, as well as expertise in key areas that can help guide MDU Resources’ continued growth,” said MDU Resources Chairman Harry J. Pearce. “Mark has extensive experience in oil and natural gas development, which is one of our growth centers, as well as outstanding experience as a chief financial officer. Bill’s technology experience will be invaluable in today’s business environment, and he also is a leader on corporate governance issues.” In addition to their general board responsibilities, Hellerstein will serve on the board’s Audit Committee and McCracken will serve on the Nominating and Governance Committee. Hellerstein is the retired president, chief executive officer and board chairman of St. Mary Land & Exploration Company (now SM Energy Company). He led St. Mary’s growth from an $80 million private company to a $2.5 billion public company listed on the NYSE. His 17-year career at the company also included positions as executive vice president and chief financial officer. Prior to joining St. Mary, Hellerstein’s career included positions as chief financial officer for CoCa Mines Inc., American Golf Corporation and Worldwide Energy Corporation. He is a former board member of Transocean Inc. His leadership has been recognized with induction into the Rocky Mountain Oil and Gas Hall of Fame, and Ernst & Young has named Hellerstein both national and Rocky Mountain Entrepreneur of the Year. Hellerstein has a bachelor’s degree in accounting from the University of Colorado. McCracken is the retired chief executive officer and board chairman of CA Technologies, one of the world’s largest information technology management software companies. He currently serves as an executive advisor to the company.