Upon request of either party in a dispute pending before the Board and for good cause shown, the chair of the panel assigned to hear the matter may issue a subpoena duces tecum, returnable at such date, time and place in advance of the hearing as determined by the chair, to secure copies of such relevant records and documents in the possession of the other party as may be necessary for the prosecution of the requesting party's case.
12-186 C.M.R. ch. 3, § 12