Whenever any person duly subpoenaed to appear and give evidence, or to produce any books and papers, before a hearing board neglects or refuses to appear, or to produce any books and papers, as required by the subpoena, or refuses to testify or to answer any question which the hearing board decides is proper and pertinent, he shall be deemed in contempt, and the hearing board shall report the fact to the superior court of the county in which the hearing is held.