When explosives in excess of immediate requirements are removed from a magazine and delivered in the vicinity of a blasting operation they shall be kept in a portable magazine consisting of either a stout tight box covered with not less than 24-gauge sheet iron and equipped with a hinged lid or in a small portable building similarly covered. Such portable magazine shall be painted red and conspicuously marked "Explosives - Dangerous", in block letters not less than three inches in height. Portable magazines shall be located as required by the Mayor.
(Ord. 31-1962. Passed 6-14-62.)