WM. PRESTON LANE, JR., GOVERNOR. 1071

3. Provided with floors made of wood or other non-
sparking material and have no metal exposed inside the
magazine.

4. Provided with suitable warning signs so located that
a bullet passing directly through the face of a sign will
not strike the magazine.

5. Provided with properly screened ventilators.

6. Equipped with no openings except for entrance and
ventilation.

7. Kept locked securely when unattended.

(b) Surface magazines for storing black blasting pow-
der, detonators, and Cardox heater elements need not be
bulletproof, but they shall be in accordance with other pro-
visions for storing high explosives. High explosives, black
blasting powder, or Cardox heater elements in amounts of
125 pounds or less or 5, 000 detonators or less shall be
stored in accordance with preceding standards or in sepa-
rate box-type magazines. Box-type magazines may also
be used as distributing magazines when quantities do not
exceed those mentioned. Box-type magazines shall be con-
structed strongly of 2-inch hardwood or the equivalent.
Metal magazines shall be lined with nonsparking material.
No magazine shall be placed in a building containing oil,
grease, gasoline, waste paper, or other highly flammable
material, nor shall a magazine be placed less than 20 feet
from a stove, furnace, open fire, or flame.

(c) After the effective date of this act, and where prac-
ticable, the location of magazines shall not be less than
200 feet from any mine opening unless effectively barri-
caded.

(d) The supply kept in distributing magazines shall
be limited to approximately 1 day's requirements, and such
supplies of explosives and detonators may be distributed
from the same magazine, if separated by at least a 6-inch
substantially fastened hardwood partition or the equivalent.

(e) The area surrounding magazines for not less than
25 feet in all directions shall be kept free of rubbish, dry
grass, or other materials of a combustible nature.

(f) If the explosives magazine is illuminated elec-
trically, the lamps shall be of explosion-proof type, in-
stalled and wired so as to present minimum fire and
contact hazards.