Any member of the board, the director, or supervisor may issue a subpoena requiring any person to appear before the board, director, or supervisor as the case may be, and be examined with reference to any matter within the scope of the inquiry or investigation being conducted and to produce any books, records or papers. Any member of the board, the director, supervisor or any duly authorized agent of the board or director, may administer an oath to a witness in any matter. In case of disobedience of a subpoena, the board, director or supervisor may invoke the aid of the circuit court of the county in which said board is created in requiring the attendance and testimony of witnesses and the production of books, papers and documents. Such circuit court may, in case of contumacy or refusal to obey a subpoena, issue an order requiring such person to appear, and to produce books, records and papers if so ordered and give evidence touching the matter in question. Any failure to obey such order of the court may be punished by such court as a contempt thereof.