the Tribunal or a President of the Tribunal or, if such leave has been refused, without the leave of a judge of the Supreme Court. Powers of Supreme Court on Appeal 17. Except as otherwise provided in the appropriate enactment, in any appeal in terms of subsection (1) of section sixteen, the Supreme Court may— (a) exercise its powers in terms of the Supreme Court Act [Chapter 7:13] or take any other course which may lead to the just, speedy and, as far as possible, inexpensive settlement of the matter; (b) make such order as to costs as it considers just. Part VII General Times and Places of Sitting of Tribunal 18. The Tribunal shall sit at such times and in such places as the Presidents of the Tribunal may appoint. Evidence of Decisions of Tribunal 19. In any proceedings before a court, a copy of an order of the Tribunal, certified by the Registrar, shall be admissible on its production by any person and shall be sufficient proof of the order unless the contrary is proved. Witness Failing to Attend Tribunal or to be Sworn or Give Evidence 20.—(1) If any person who has been subpoenaed to give evidence before the Tribunal or to produce any book or document to the Tribunal— (a) fails without just cause to attend or to remain in attendance until duly excused by the Tribunal from further attendance; or (b) without just cause, refuses to be sworn as a witness; or (c) having been sworn, refuses without just cause— (i) to answer fully and satisfactorily any question lawfully put to him; or (ii) to produce the book or document; as the case may be, he shall be guilty of an offence and liable to a fine not exceeding two thousand five hundred dollars or to imprisonment for a period not exceeding six months or to both such fine and such imprisonment. (2) Subsection (1) shall not be construed as limiting the Tribunal’s power under section eight to deal summarily with any contempt. Witness Giving False Evidence 21. Any witness who, after having been sworn, makes a false statement of fact material to any question under consideration by the Tribunal, knowing the statement to be false or not having reasonable grounds for believing it to be true, shall be guilty of an offence and liable to a fine not exceeding ten thousand dollars or to imprisonment for a period not exceeding two years or to both such fine and such imprisonment.