The Board of Pardons shall keep a record of every petition received, and of every pardon, reprieve, or commutation of sentence granted or refused, and the reasons assigned therefor, and shall have a seal, with which every pardon, reprieve, or commutation of sentence shall be attested. It may adopt such additional necessary and proper rules as are not inconsistent herewith. The commissioner of corrections or a designee shall be the secretary of the board. The commissioner shall have charge of and keep its records and perform such other duties as the board may from time to time direct. The commissioner is hereby authorized and empowered to serve subpoenas and other writs or processes necessary to return parole violators to prison, and to bring before the board witnesses to be heard in matters pending before it. The records and all the files shall be kept and preserved by the secretary, and shall be open to public inspection at all reasonable times.