§ 454. Construction of magazines. Unless otherwise prescribed by the
regulations promulgated pursuant to this article, magazines in which
explosives shall be lawfully kept or stored shall be constructed of
brick, concrete, metal or wood covered with metal, and shall have no
openings except for ventilation and entrance. All explosive magazines,
except those in mines and tunnels, shall be located above ground. All
explosive magazines shall be kept clean and dry at all times.