A/P Mine E.P. No. 4Improved Mine Type I
U.S.N.B.D. - BRITISH LAND MINES AND FIRING DEVICES
A/P MINES & FUZES

 

 

 

DIAMETER

2 in.

BRITISH MINE

HEIGHT

3-5/6 in.

NO. 5 MK. I

TOTAL WEIGHT

 

EXPLOSIVE WEIGHT

6-3/4 oz.

EXPLOSIVE

a) 50/50 Pentolite

(ANTI-PERSONNEL)

 

b) 50/50 RDX/TNT  

MATERIAL

Cardboard

(SERVICE)

COLOR

Varnished brown paper  

FUZE

Special  

PRESSURE REQUIRED

Approx. 6 - 12 lbs.  

 

 

 

     

USE:

This mine is a non-metallic anti-personnel mine, designed to prevent detection by means of mine detectors. The only metallic parts used in its construction are the deto-nator, spring, balls, and striker.

COMPONENTS:

The mine consists of two principal components: the loaded mine body and the fuze mechanism.

(a) Mine Body: The mine body consists of a cardboard cylinder and ends, containing the explosive main charge. A central well is provided for the insertion of the fuze. A 5 dram perforated C.E. pellet booster is placed around the lower portion of the central well.

(c) Special Fuze: The waterproof igniter unit used is a No. 89 Mk I detonator con-sisting of a 1.7 grain igniter cap spun into the open end of a No. 8 or No. 27 detonator. A hollow ebonite rod containing a spring-loaded striker comprises the striker unit. The striker is retained by two retaining balls which are held engaged in a groove in the stri-ker by a collar which fits over the outside of the rod. The fuze functions when sufficient pressure is exerted on top of the igniter to force the rod down through the collar and release the retaining balls. This fuze unit is packed separately from but in the same crate as the mines in which it is to be used. During normal shipment and storage the mines contain a wooden plug in the fuze well.

ASSEMBLY & ARMING:

Place the mine in the ground. Remove the wooden plug from the fuze well and insert a No. 89 detonator provided. Check the striker unit to make certain that it is properly assembled, and insert striker unit in fuze well above the igniter unit. Be careful to exert no pressure on the striker unit once it has been inserted in the mine.

NEUTRALIZATION:

To neutralize this mine, carefully remove the striker unit, lift mine, and remove deto-nator-igniter unit.

REMARKS:

1. Because of the small effective pressure area of the striker unit, it is recommended that this area be increased by placing a small piece of wood, etc., above the striker after laying.

2. Due to the non-metallic construction of this mine and the small area, it will be very difficult to detect this mine either with detectors or by probing.

3. A circular steel pressure plate is provided with the later issues of this mine. The pressure plate has a small bush on its under surface which fits over the top of the ebo-nite striker housing. The use of this pressure plate will eliminate the non-detecable fea-ture of the mine, but will increas the operating efficiency by increasing the presssure area.

4. When loaded with 50/50 Pentolite, a black band with a green band on either side is painted around the center of the mine. This is replaced by a single blue band when 50/50 RDX/TNT filling is used. In both cases, a red band is painted around the mine near the base.

A/P Mine E.P. No. 4Improved Mine Type I