(1) The Central Government may for the purposes of this Act constitute one or more Tribunals and each of the Tribunals shall consist of three members appointed by the Central Government one of whom shall be a person who is, or has been, a Judge of a High Court or has been a Judge of the Supreme Court, and he shall be the Chairman thereof.
     (2) A Tribunal may choose one or more persons possessing special knowledge of any matter relating to any case under inquiry to assist the Tribunal in determining any question which has to be decided by it under this Act.
     (3) Every Tribunal shall have the powers of a civil court while trying a suit under the Code of Civil Procedure, 1908 (5 of 1908), in respect of the following matters:--
         (a) summoning and enforcing the attendance of any person and examining him on oath;
         (b) requiring the discovery and production of documents;
         (c) receiving evidence on affidavits;
         (d) issuing commissions for the examination of witnesses or documents.
     (4) Every Tribunal shall have power to regulate its own procedure and decide all matters within its competence, and may review any of its decisions in the event of there being a mistake on the face of the record or correct any arithmetical or clerical error therein.