North Dakota Gov. Doug Burgum extended a special congratulatory message to MDU Resources and its employees in honor of the company’s 100th anniversary. MDU Resources is the oldest publicly traded company headquartered in North Dakota. It has been listed on the New York Stock Exchange under the ticker MDU since 1948. About MDU Resources’ 100 years MDU Resources was incorporated on March 14, 1924, as a small utility serving rural communities along the Montana-North Dakota border. Over the past century, MDU Resources has grown into a corporation with operations across the United States. Today, MD