When the storage facility does not have enough explosives to accomplish the mission, items with low-
fragmentation/high-explosive ratios may be used to augment the priming charges. Examples of this type of
explosive are the M15 anti-tank (AT) mine, M2- and M3-series shaped charges, and the Bangalore torpedo.
Firing Systems
There are two firing systems used, electric and nonelectric. The electric system is usually preferred, because it
allows more complete control; however, it requires more equipment and cannot be used during electrical storms.
The nonelectric system uses less equipment, but once the fuse lighter is fired, effective control over the shot is
lost. Regardless of the system used, all shots will be dual-primed, as shown in Figure 1-13, Figure 1-14, and
Figure 1-15.
The Nonelectric Firing System
This system is easy to use. It is the one normally used in the field during fast-moving operations. The nonelectric
system has three components, as shown in Figure 1-11 on page 1-17. These are the fuse igniter, the time fuse, and
a nonelectric blasting cap.
Figure 1-13. Dual nonelectric firing system with dual detonating cord priming.
Fuse Igniters. The system can use three types of fuse igniter. These are the M60 fuse igniter, the M2 fuse
igniter, and a common match.
The M60 fuse igniter, shown in Figure 1-16, is the preferred item to use. It is the newest fuse igniter in the supply
system. If it does not function the first time, it can be recocked and fired again. The M60 fuse igniter is used as
follows:
Unscrew the fuse holder cap two or three turns. Do not remove it.
1-23
MM0170
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