An employer, self-employed person or user shall ensure that -
(a) the official number of the building is affixed on the outer wall near the main door to every building within the danger area;
(b) a copy of the schedule licence is permanently affixed in a conspicuous position inside every building in the
danger area; and
(c) a loose article list, approved by the explosives manager, is permanently affixed in a conspicuous position inside every danger building: Provided that all such numbering and documentation shall be printed or typed.