The superintendent shall have and exercise the same control and authority over the prisoners committed or transferred to such farm as the sheriffs of the Commonwealth have by law over the prisoners committed or transferred to their jails.
During the term of their appointment the superintendent and guards are hereby invested with the powers and authority of a conservator of the peace (i) within the limits of such farm and within one mile thereof, whether such farm is situated within or beyond the limits of the political subdivision establishing and maintaining the same, and (ii) in conveying prisoners to and from such farm.
Va. Code § 53.1-98