Figure 2-28. Detonating cord priming of plastic explosive

TM-9-1375-213-12 Demolition Materials Manual Page Navigation
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TM 9-1375-213-12

Figure 2-28. Detonating cord priming of plastic explosive.

(c) Side priming method (fig. 2-31) Using

when charges placed require no tamping. Side

cap crimpers, make cap well about 1 inches

priming is used when charge is placed in a tamped

from one end of dynamite cartridge. Slant cap

borehole to prevent damage to primer during

well so that blasting cap, when inserted, will be

placement and tamping.

nearly parallel with side of cartridge, and explo-

(1) Nonelectric priming.

sive end of cap will be at about the middle of the

(a) End priming method (A, fig. 2-30).

cartridge. Insert fused blasting cap. Fasten se-

Using cap crimpers, make cap well in end of dy-

curely by tying string to fuse and then wrapping

namite cartridge and insert fused blasting cap.

it around cartridge, making two or three turns

Tie cap and fuse securely in cartridge with string.

before tying, The primed cartridge may be weath-

(b) Weatherproof end priming method (B,

erproofed by wrapping a string closely around

fig. 2-30). This method helps weatherproof the

cartridge, extending it an inch or so on each side

primed charge. Unfold wrapping at folded end of

of hole to cover it completely, Cover string with

dynamite cartridge and make cap well in exposed

weatherproof sealing compound.

dynamite using cap crimpers. Insert fused blast-

(2) Electric priming.

ing cap into cap well, close wrapping, and fasten

(a) End priming method (A, fig. 2-32).

securely with string or tape. Apply weatherproof-

Using cap crimpers, make cap well in end of dy-

ing to tied string or tape.

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