No person shall manufacture, transport, sell, use
or store dynamite, nitroglycerin, guncotton, giant powder, smokeless
powder, black powder or other explosive material, in any building
or structure or upon any premises, without a permit therefor issued
by the Fire Subcode Official. Such permit shall be in writing and
shall state the kind of explosives, the building or place where such
explosives will be manufactured, transported, sold or stored and the
maximum quantity which may be in such building or place at any one
time, and may contain special conditions regulating the manufacture,
transportation or storing of such explosives. No permit shall be granted
for the keeping or storing of more than five pounds of gun powder
in any building, unless such gun powder is to be kept in a magazine
made of fireproof material, or of wood covered with sheet iron, mounted
on wheels and kept securely locked except when necessarily opened
for use, in which case a permit may be granted for the keeping and
storing of not more than 50 pounds of gun powder. No permit shall
be granted for the storing or keeping of any dynamite, nitroglycerin,
giant powder or other explosives other than gun powder in any building
within 1,000 feet of any other building or structure in excess of
one pound; or for the keeping of more than 1,000 blasting caps within
1,000 feet of any other building or structure.