Section 21. Provision as to Petroleum refinery: (1) Any one desirous of establishing a Petroleum refinery shall be required to obtain permission from the Department. (2) The particulars to be furnished by the person seeking permission under Sub-section (1), the form of the permission and the terms and conditions to be fulfilled in connection with petroleum refining shall be as prescribed. (3) The prevailing law shall apply in matters other than those mentioned in Sub-sections (1) and (2).