18   Powers of commissioner

(1)  For the purposes of the inquiry the commissioner shall have all such powers, rights, and privileges as are vested in the Supreme Court or in any judge thereof in or in relation to any action or trial, in respect of the following matters:

(a)  compelling the attendance of witnesses,

(b)  compelling witnesses to answer questions which the commissioner deems to be relevant to the inquiry,

(c)  compelling the production of documents and other things.

(d)  (Repealed)

(2)  Nothing in this or any other section of this Division shall limit the powers, rights, and privileges of the commissioner under any other provision of this Act.