12-180-12 Me. Code R. § 13
The Chair has the power to administer oaths and to require by subpoena the attendance and testimony of witnesses, the presentation of books, records and other evidence relative or pertinent to the issues presented to the Board for determination. Any party may file a written application for subpoenas with the Board in accordance with section 17 of this Chapter. A person served with a subpoena issued by the Board may not refuse or neglect to appear or to testify or to produce books and papers relevant to the investigation, inquiry or hearing as commanded in that subpoena with the Board. Upon failure of any party to comply with a subpoena, the Board may, absent constitutional, statutory or other privilege, disregard all related evidence offered by that party.
12-180 C.M.R. ch. 12, § 13