The superintendent, warden, or jailer of any jail or state or county correctional institution in which persons convicted of a crime may be confined and all officers or employees thereof shall at all times cooperate with the board and, upon its request, shall furnish it with such information as they may have respecting any person inquired about as will enable the board properly to perform its duties. Such officials shall, at all reasonable times, when the public safety permits, give the members of the board and its authorized agents and employees access to all inmates in their charge.