(1) This regulation applies to a building, room or receptacle within premises that are used to store explosives, except a building at the main entrance of the premises.
(2) The outside door of the building or room or the lid of the receptacle—
(a) must be marked with a Class Label not less than 100 mm 2 in size; and
(b) must be marked with the Hazard Division of the explosives stored or, if the explosives are of more than one Hazard Division, their collective Hazard Division determined in accordance with regulation 8; and
(c) must be marked in conspicuous red letters on a white background with the words "EXPLOSIVES DETONATORS" or "EXPLOSIVES" or "DISTRESS SIGNALS" or "FIREWORKS" or "AMMUNITION" or "PROPELLANT", as appropriate; and
(d) may also be marked with another term to describe more accurately the explosives in the building, room or receptacle.