<SEC-DOCUMENT>0000067716-15-000075-index.html : 20150612 <SEC-HEADER>0000067716-15-000075.hdr.sgml : 20150612 <ACCEPTANCE-DATETIME>20150612093428 ACCESSION NUMBER: 0000067716-15-000075 CONFORMED SUBMISSION TYPE: 11-K PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20141231 FILED AS OF DATE: 20150612 DATE AS OF CHANGE: 20150612 FILER: COMPANY DATA: COMPANY CONFORMED NAME: MDU RESOURCES GROUP INC CENTRAL INDEX KEY: 0000067716 STANDARD INDUSTRIAL CLASSIFICATION: MINING, QUARRYING OF NONMETALLIC MINERALS (NO FUELS) [1400] IRS NUMBER: 410423660 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 11-K SEC ACT: 1934 Act SEC FILE NUMBER: 001-03480 FILM NUMBER: 15927462 BUSINESS ADDRESS: STREET 1: 1200 WEST CENTURY AVENUE CITY: BISMARCK STATE: ND ZIP: 58503 BUSINESS PHONE: 701-530-1059 MAIL ADDRESS: STREET 1: 1200 WEST CENTURY AVENUE CITY: BISMARCK STATE: ND ZIP: 58503 FORMER COMPANY: FORMER CONFORMED NAME: MONTANA DAKOTA UTILITIES CO DATE OF NAME CHANGE: 19850429 </SEC-HEADER> <DOCUMENT> <TYPE>11-K <SEQUENCE>1 <FILENAME>a2014form11-k.htm <DESCRIPTION>MDU RESOURCES GROUP, INC. FORM 11-K <TEXT> Document 1 - file: a2014form11-k.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-23 <SEQUENCE>2 <FILENAME>a2014ex23.htm <DESCRIPTION>CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM <TEXT> Document 2 - file: a2014ex23.htm
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