(1) In case of failure or refusal of any person to comply with an order of the director or subpoena issued by him or his agents, or refusal of a witness to testify to any matter regarding which he may be lawfully interrogated, or refusal to permit an inspection as provided in this article, the judge of the district court for the county in which the person resides or of the county in which said person has been ordered to appear and testify before said director, on application of the director or any person appointed by him, shall compel obedience by attachment proceedings as in the case of disobedience of the requirements of a subpoena issued from such district court or on a refusal to testify therein.

(2) Any person serving a subpoena or order shall receive the same fees as a sheriff for like service. Such subpoena or order may be served by any officer duly authorized to subpoena witnesses, or by any person designated by the director for such purpose, and proof of the serving of such subpoena or order shall be by the return of such person or officer endorsed thereon or attached thereto. Each witness who appears in answer to a subpoena before the director or his agent, if so ordered by the director, shall receive for his attendance the fees and mileage provided for in civil cases in the district court in the county where such witness attends which shall be paid in the same manner as other expenses of the division are paid.

(3) No witness subpoenaed at the instance of a party other than the director or his agent shall be entitled to compensation unless the director in his discretion shall so order.