15 centimeters (6 in.) from the free end of the
a. Noncapped Detonating Cord (Method 1, fig. 5-
detonating cord by numerous wraps of string or tape, or
may be attached by an Ml detonating cord clip (fig. 5-
(1) Tie detonating cord securely around
explosive by a clove hitch with two extra turns.
d. Detonating Cord Connector (fig. 5-19). The
connector may be used to connect detonating cord end
(2) Fit cord snugly against block and push
to end or at right angles. The connector may also be
loops close together.
used to fasten a blasting cap, either electric or
nonelectric, to the detonating cord.
b. Noncapped Detonating Cord (Method 2, fig. 5-
e. Electrical Tape (fig. 5-20). Electrical tape may
be used to splice two lengths of detonating cord together
(1) Place loop of detonating cord on the block
and for attaching branch lines to the main line. When
and wrap detonating cord four times around the block.
splicing two cords together, overlap the two ends about
0.5 meter (18 inches) and tape the center at least 0.15
meter (6 in.). Connect branch lines by taping at least
(2) Draw free end of detonating cord through
0.15 meter (6 in.) pigtail extending along the main line
loop and pull until tight.
towards the source of initiation. Tape may also be used
to connect an electric or nonelectric blasting cap to
c. Noncapped Detonating Cord (Method 3, fig. 5-
detonating cord as shown in figure 5-20.
5-15. CAPPING DETONATING CORD
(1) Lay detonating cord at an angle across
When capping detonating cord with nonelectric
blasting cap, the following procedures will be used.
(2) Wrap running end three times over this
cord and around block; at fourth turn slip running end
a. Use cutting jaw of cap crimper M2 to cut
under the three wraps and parallel with cord laid at
detonating cord, or use a clean sharp blade. Cut
angle and draw tight.
detonating cord squarely across.
d. Capped Detonating Cord with Priming Adapter
Omit the following step if a priming
adapter is not being used.
(1) Pull cap into adapter and insert into cap
well of explosive.
b. Pass end of detonating cord through adapter.
(2) Screw adapter in place.
c. The method of handling and inspecting the
nonelectric blasting cap and the procedure for crimping
it to the detonating cord is the same as used for time
5-17. DUAL FIRING SYSTEMS
blasting fuse. Follow paragraphs 5-4e to 5-4j for these
Dual firing systems should be used whenever
possible to increase the probability of successful firing.
Two complete and independent firing systems are used,
5-16. PRIMING THE CHARGE
each capable of firing the same charge. There may be
two electric circuits, two nonelectric circuits, or a
The charge may be primed by use of either a
combination electric and nonelectric system.
capped detonating cord or by wrapping it directly with
noncapped detonating cord as follows: