Rehearing by order of the Minister
22.—(a)  Where the Minister directs a rehearing under section 252 of the Act, he shall cause such reasonable notice to be given to the parties whom he considers to be affected by the rehearing as the circumstances of the case may, in the opinion of the Minister, permit.
(b)  The provisions of rule 21(e), (f), (g), (h), (i), (j) and (k), shall mutatis mutandis apply to a rehearing as if it were an appeal, and as if the Court or authority before whom the rehearing takes place were the Supreme Court.