In all hearings and proceedings before the commission, the evidence and testimony of witnesses and the production of documentary evidence may be required. Subpoenas may be issued by the commission for appearance at any designated place of hearing. In case of disobedience to a subpoena or other process, the commission may invoke the aid of any circuit court in requiring the evidence and testimony of witnesses, and the production of books, papers and documents. Upon proper showing, the circuit court shall issue an order requiring witnesses to appear before the West Virginia Legislative Claims Commission; produce books, papers and other evidence; and give testimony touching the matter in question. A person failing to obey the order may be punished by the circuit court as for contempt.