23. The board in exercising its powers may itself or by a person designated by it inquire into any matter within its jurisdiction.
The board has for its inquiries and hearings the powers of a commissioner appointed under the Act respecting public inquiry commissions (chapter C-37).
At inquiries and hearings of the board, the parties may appear and plead in person or through an advocate and present witnesses to testify; such witnesses may require taxation as if they were testifying before the Superior Court.
The writs of subpoena for the summons of witnesses shall be signed by the president or the secretary of the board.