(a) It is unlawful to store or keep any explosive in excess of one pound of gunpowder in any storeroom, wareroom, building or on any premises within the city; provided, that not more than five pounds of gunpowder may be kept in closed metal canisters in a store or wareroom away from artificial heat or light; provided further, that not more than 50 pounds of gunpowder may be kept in a magazine made of fire-proof material or of wood covered with sheet iron and mounted on wheels, and kept securely locked except when necessarily opened for use by authorized persons, and not more than 1,000 blasting caps in a similar but separate magazine.
(b) The magazine shall be conspicuously placarded in red letters at least four inches high “Explosives”, which placard shall be located within the building, on the floor nearest the street level and within ten feet of the street entrance.
(2010 Code, § 7-703)