The division shall have power to hold investigations, inquiries, and hearings concerning matters covered by the provisions of this chapter and all accidents in aeronautics within this State. All hearings conducted by the division shall be open to the public. Each officer of the division designated by it to hold any inquiry, investigation or hearing shall have the power to administer oaths and affirmations, certify to all official acts, issue subpoenas and compel the attendance and testimony of witnesses and the production of papers, books, and documents. In case of failure to comply with any subpoena or order issued under authority of this chapter the division, or its authorized representative, may invoke the aid of any circuit court in this State. The court may thereupon order the witness to comply with the requirements of the subpoena or order to give evidence touching the matter in question. Any failure to obey the order of the court may be punished by the court as a contempt thereof.