CREDIT AGREEMENT Dated as of August 26, 2005 among CENTENNIAL ENERGY HOLDINGS, INC., THE SEVERAL FINANCIAL INSTITUTIONS FROM TIME TO TIME PARTY TO THIS AGREEMENT, as Administrative Agent, UNION BANK OF CALIFORNIA, N.A., as Co- Syndication Agent, ABN...Credit Agreement • November 3rd, 2005 • Mdu Resources Group Inc • Mining & quarrying of nonmetallic minerals (no fuels) • New York
