d. The preparation of initiators and the priming of
All fuses in the same roll should
explosives will not be performed in advance of
requirements. Prepared initiators, if not used, will be
burn at the same rate; although, rate
expended. They will not be returned to explosive
approximately 98 to 148 seconds per
meter (30 to 45 seconds per foot) in
different rolls. The M700 fuse burns
e. Only sufficient explosives or initiators to meet
at approximately 131 seconds per
the requirement of the operation involved will be brought
meter (40 seconds per foot).
to the disposal site.
f. Personnel engaged in demolition work shall
have ample time to reach shelter affording overhead
and frontal protection. The minimum distance between
shelter and destruction pit or site shall be in accordance
with TM 91300-206 and DARCOM-R 385-100.
5-4. ASSEMBLY OF NONELECTRIC SYSTEM
Assemble a nonelectric system as instructed in a
through m below:
TIME BLASTING FUSE WITH A
ROUGH JAGGED CUT ACROSS THE
Figure 5-2. Holding, cutting, and capping time
END CAN CAUSE A MISFIRE OF THE
blasting fuse and detonating cord.
b. Cut off 0.91 meters (3 feet) of fuse and check
burning rate. Ignite fuse with fuse igniter if available
Cutting off at least 15 centimeters (6
(par. 5-5), or cut a slit near one end of fuse, insert a
inches) of fuse will reduce the
match head into split, and light match (fig. 5-3). Note
possibility of a misfire from a damp
time it takes for fuse to burn. Compute burning rate.
Compute length of fuse necessary to permit the person
detonating the charge to reach shelter or a safe distance
by walking at a normal pace before the explosion.
a. Cut and discard at least 15 centimeters (6-inch
lengths) from free end of fuse. Cut will be made with
cutting jaws of M2 crimper (fig. 5-2). If crimper does
c. Cut necessary length of fuse squarely across. A
not have clean sharp jaws, use a sharp knife to cut the
minimum of 0.91 meters (3 feet) will be used.
fuse. To assure that the fuse is cut square when using
the knife, cut fuse against a solid wooden surface.
Omit the following step if a priming
adapter is not being used.
TEST BURNING OF TIME BLASTING
d. Pass end of time blasting fuse through priming
DOWNWIND AT A MINIMUM SAFETY
adapter (fig. 5-6).
DISTANCE OF 7.5 METERS (25 FEET)
FROM BLASTING CAPS OR OTHER
e. Take one nonelectric blasting cap (fig.
from cap box.