SIGNATURES Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. MDU RESOURCES GROUP, INC. By: /s/ John A. Schuchart John A. Schuchart (Chairman of the Board and Chief Executive Officer) Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant in the capacities and on the date indicated. Signature Title Date /s/ John A. Schuchart Chief Executive March 3, 1994 John A. Schuchart (Chairman of the Board Officer and and Chief Executive Officer) Director /s/ Harold J. Mellen, Jr. Chief Corporate March 3, 1994 Harold J. Mellen, Jr. (President and Development Officer and Chief Corporate Development Officer) and Director /s/ Douglas C. Kane Chief Operating March 3, 1994 Douglas C. Kane (Executive Vice President Officer and and Chief Operating Officer) Director /s/ Warren L. Robinson Chief Financial March 3, 1994 Warren L. Robinson (Vice President, Officer Treasurer and Chief Financial Officer) /s/ Vernon A. Raile Chief Accounting March 3, 1994 Vernon A. Raile (Vice President, Officer Controller and Chief Accounting Officer) /s/ Richard L. Muus Director March 3, 1994 Richard L. Muus /s/ Robert L. Nance Director March 3, 1994 Robert L. Nance /s/ John L. Olson Director March 3, 1994 John L. Olson /s/ San W. Orr, Jr. Director March 3, 1994 San W. Orr, Jr. /s/ Charles L. Scofield Director March 3, 1994 Charles L. Scofield /s/ Homer A. Scott, Jr. Director March 3, 1994 Homer A. Scott, Jr. /s/ Joseph T. Simmons Director March 3, 1994 Joseph T. Simmons /s/ Stanley F. Staples, Jr. Director March 3, 1994 Stanley F. Staples, Jr. /s/ Sister Thomas Welder Director March 3, 1994 Sister Thomas Welder EXHIBIT INDEX Exhibit No. 3(a) Composite Certificate of Incorporation of MDU Resources Group, Inc., as amended to date, filed as Exhibit 4(a) in Registration No. 33-13092. . . . . . . . . . . * 3(b) By-laws of MDU Resources Group, Inc., as amended to date . . . . . . . . . . . . . . ** 4(a) Indenture of Mortgage, dated as of May 1, 1939, as restated in the Forty- Fifth Supplemental Indenture, dated as of April 21, 1992, and the Forty-Sixth through Forty-Eighth Supplements thereto between the Company and the New York Trust Company (The Bank of New York, successor Corporate Trustee) and A. C. Downing (W. T. Cunningham, successor Co-Trustee), filed as Exhibit 4(a) in Registration No. 33-66682; and Exhibits 4(e), 4(f) and 4(g) in Registration No. 33-53896 . . . . . . . . . * + 10(a) Management Incentive Compensative Plan, filed as Exhibit 10(a) in Registration No. 33-66682 . . . . . . . . . . . . . . . . . * + 10(b) 1992 Key Employee Stock Option Plan, filed as Exhibit 10(f) in Registration No. 33-66682 . . . . . . . . . . . . . . . . . * + 10(c) Restricted Stock Bonus Plan, filed as Exhibit 10(b) in Registration No. 33-66682 . . . . . . . . . . . . . . . . . * + 10(d) Supplemental Income Security Plan, filed as Exhibit 10(c) in Registration No. 33-66682 . . . . . . . . . . . . . . . . . * + 10(e) Directors' Compensation Policy, filed as Exhibit 10(d) in Registration No. 33-66682 . . . . . . . . . . . . . . . . . * + 10(f) Deferred Compensation Plan for Directors, filed as Exhibit 10(e) in Registration No. 33-66682 . . . . . . . . . . . . . . . . . * 13 Financial statements and supplementary data contained in the Annual Report to Stockholders for 1993. . . . . . . . . . . . . ** 21 Subsidiaries of MDU Resources Group, Inc.. . . ** 23(a) Consent of Independent Public Accountants. . . ** 23(b) Consent of Engineer. . . . . . . . . . . . . . ** 23(c) Consent of Engineer. . . . . . . . . . . . . . ** ____________________ * Incorporated herein by reference as indicated. ** Filed herewith. + Management contract, compensatory plan or arrangement required to be filed as an exhibit to this form pursuant to Item 14(c) of this report.