Figure 5-3. Lighting time blasting fuse with match

TM 9-1300-277

WARNING

FORCING A TIME FUSE INTO A

BLASTING CAP BY TWISTING OR

OTHER MEANS MAY CAUSE CAP TO

EXPLODE. DO NOT FORCE TIME

FUSE INTO BLASTING CAP.

WARNING

F FUSE IS NOT IN CONTACT WITH

EXPLOSIVES IN THE CAP, A

MISFIRE MAY OCCUR.

ONTACT BETWEEN CAP END OF

TIME FUSE AND MOIST FINGERS OR

OTHER

DAMP

OBJECTS

CAN

CAUSE A MISFIRE.

g. Hold time blasting fuse vertically at

approximately arms length with square cut end up and

slip blasting cap gently down over it so that ignition

Figure 5-3. Lighting time blasting fuse with match.

charge in cap is in contact with end of time fuse; if not in

contact, it may misfire. If end is flattened or if it is too

WARNING

large to enter blasting cap freely, recut fuse or roll time

fuse between thumb and fingers until size is reduced, to

FOREIGN MATTER IN A BLASTING

permit free entry.

CAP MAY CAUSE A MISFIRE. IF

FOREIGN MATTER IS TO BE

REMOVED FROM A NONELECTRIC

h. After blasting cap has been seated, grasp time

BLASTING CAP, DO NOT TAP CAP

blasting fuse between thumb, ring, and little finger of

WITH A HARD OBJECT OR AGAINST

less favored hand (left or right) and place forefinger

A HARD OBJECT. NEVER BLOW

over closed end of cap to hold it firmly against end of

INTO CAP.

DO NOT INSERT

time fuse. Keep a slight pressure on closed end of cap

with forefinger (C, fig. 5-2).

ANYTHING INTO CAP TO REMOVE

DIRT OR FOREIGN MATERIAL.

WARNING

RIMPERS ARE EQUIPPED WITH

f. Inspect nonelectric blasting cap by looking into

FUSE CUTTER:

MAKE CERTAIN

the open end. If any foreign matter or dirt is present,

CUTTING SECTION IS NOT USED

follow procedures below:

DURING CRIMPING OPERATION.

(1) Hold cap, near open end, between thumb

CRIMP

TOO

NEAR

THE

and middle finger, of one hand (fig. 5-2).

EXPLOSIVE IN BLASTING CAP MAY

CAUSE DETONATION.

DO NOT

(2) Aim open end of cap at palm of second

CRIMP CAP MORE THAN 1/4-INCH

hand.

FROM OPEN END.

(3) Gently bump wrist of one hand against

i. Place crimpers around cap just above thumb

wrist of other hand.

and third finger. Slide second (middle) finger down

outer edge of blasting cap to guide crimper (C, fig. 5-2),

(4) If foreign matter does not come out,

and thus obtain accurate crimping since finger can be

dispose of cap in accordance with local regulations.

used to locate open end of blasting cap.

Change 2

5-3