(1) A Committee, or the Board, may summon any Orson to appear as a witness in the course of any enquiry. Such summons may require a witness to appear before it on a date specified therein and to produce any books, papers or other documents and things in his possession or under his control relating in any manner to the enquiry.
(2) Any person may be summoned to produce a document in h is p o s s e s s io n o r u n d e r h i s c o n t r o l , w i t h ou t b e in g s u mmo n e d to g iv e evidence.
(3 ) A summon under sub-rule (I) may be addressed to an individual or an organization of employers or a registered trade union of workers.
(4) A su mmon under th is ru l e may be se rved —
(i) in the case of an individual, by being delivered or sent to him by registered 'post ;
(ii) in the case of an employers' organization or a registered trade union of workers, by being delivered or sent by registered post to the Secretary or other principal officer of the organization or union, as the case may be.
(3) The provisos of the Civil Procedu!t Code relating to the summoning and enforcement of the appearance of witnesses and the production of documents shall, so far as may be, apply to proceedings before a Committee, or the Board.