Every decision and report shall be filed in the office of the clerk of the district court of the county in which the dispute arose, and a copy served upon each party to the controversy, and a copy furnished to the labor commissioner for publication in the report of the commissioner, who shall cause such decision and report to be published in at least one newspaper in the city in which the dispute arose. All evidence taken and exhibits and documents offered shall be carefully preserved and at the close of the investigation shall be filed in the office of the clerk of the district court.