Demolition Kits

a. General. Demolition kits contain explosive and nonexplosive items for performing various demolition tasks. Some kits are designed for general demolition; others, for specific demolition tasks. Kits include accessories, tools and other specialized components in specially designed containers.

b. General Blasting Kits. These kits are designated Demolition Kit, Blasting: Explosive Initiating, Electric and Nonelectric, and Demolition Kit, Blasting: Explosive Initiating, Nonelectric. They contain explosives and equipment needed for most general demolition work. Components of these kits are listed in TM 9-1375-213-12 and TM 9-1375-213-34.

c. Bangalore Torpedo Demolition Kit. The bangalore torpedo demolition kit (fig. 8-27), composed of single, high-explosive-filled steel tubes or multiple lengths with connecting sleeves, is used for blasting a path through wire entanglements or other obstructions. The individual tubes, called loading assemblies, may be used as explosive charges for other demolition purposes. The bangalore torpedo kit consists of 10 loading assemblies, 10 connecting sleeves, and 1 nose sleeve. The loading assembly is a 5-foot-long, steel tube filled with explosives. The M1Al torpedoes have a main filler of approximately 9 pounds amatol with a TNT booster surrounding the cap wells at each end. The MIA2 torpedoes have a main filler of approximately 10 pounds Comp B with a Comp A3 booster at each end Each end of the tube contains a threaded cap well. This well accommodates a blasting cap which may be fitted to any standard firing device or other means of initiation. A few turns of detonating cord wrapped around the MIAl loading assembly will also initiate it when detonated. The Ml A2's booster is less sensitive and cannot reliably be initiated by detonating cord. The connecting sleeve is a short tube which accommodates 2 loading assemblies that can be held by 3 spring clips. The nose sleeve, which is held in place by a spring clip, has a rounded point for ease in pushing the torpedo through obstacles.

d. Earth Rod Explosive Kit. The earth rod kit is used for making holes in earth or soft shale, not in rock or other hard material. Holes may be as deep as 6 feet and several inches in diameter. The assembled hole-making unit of the earth rod kit (fig. 8-28) consists of a 6-foot steel rod, a detachable point that fits the lower end of the rod, and a cylindrical firing chamber that screws on at the upper end. A propelling charge placed in the firing chamber, when exploded by a primer attached to a piece of time blasting fuse and a fuse igniter, drives the rod into the earth. A tripod with adjustable legs is used to hold the rod steady for firing. A removable handle, an extractor that grips and lifts the rod, and an extension that can be used to lengthen the rod are used to pull the rod from the earth. A forked, inserting rod is furnished for inserting a small linear charge (or an improvised linear charge made of detonating cord) into the hole made by the rod.

e. Demolition Charge Assembly. The demolition charge assembly (fig. 8-29) consists of 8 block demolition charges, 8 block demolition charge hook assemblies, and 2 demolition priming assemblies. The priming assembly (fig. 8-30) consists of a length (approximately 5 feet) of detonating cord, 2 hexagonal-shaped, plastic adapters, each holding a booster, and 2 detonating cord clips. The adapters attached to the cord, one at each end, are threaded to fit the cap well of demolition blocks or light antitank mines. Each booster contains a charge of 13.5 grains of RDX. The clips, on the

M37 Demolition Block
connecting sleeve

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Figure 8-27. Bangalore torpedo demolition kit 8-19

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Figure 8-27. Bangalore torpedo demolition kit 8-19

M37 Demolition Kit
Figure 8-28. Earth rod explosive kit

cord about 20 inches from either end of the assembly, are for making junctions on main lines of detonating cord in a demolition system. The demolition charge assembly, main lines and their initiators are used to form a demolition system with one or more demolition blocks as the main explosive charge.

f. Mine-Clearing Devices.

(1) Projected charge demolition kit (antipersonnel mine clearing). This kit (fig. 8-31 and 832) is a flexible linear charge used to clear narrow lanes in antipersonnel mine fields. The nylon-covered detonating cable (fig. 8-31) is 170 feet long, about 1 inch in diameter, weighs 63 pounds and contains 46 pounds of oil-soaked PETN. This charge consists of 19 strands of special detonating cord, each strand containing approximately 100 grains of PETN per foot. Regular detonating cord should not be used as a substitute. One end of the cable has a cable grip with loops for anchoring the cable to a stake driven in the ground. This end contains a booster charge and a threaded cap well for inserting a 15-second delay detonator for exploding the cable. In the carrying case, the cable is coiled around a cone, which is removed before the unit is fired. The cable is projected across the minefield by a rocket motor (fig. 8-32) and then drops onto the field. The cable is then exploded by the detonator in the anchored end. A launcher, which is a folding stand of aluminum angles, is used to hold the rocket motor in position for firing. The cable is issued either with or without the rocket motor. In the latter case, the rocket motor is requisitioned separately. One fuse igniter is provided for igniting the rocket motor. The entire assembly is contained in a carrying case, which is a cylindrical aluminum can with removable lids, provided with carrying handles on both ends. The loaded case weighs 92 pounds.

(2) Projected charge demolition kit (antitank mine clearing). These kits (fig. 8-33) are used principally to breach minefields. They may also be used to breach bands of log posts, steel rails, antitank ditches and some small concrete obstacles. Some demolition kits consist of sections of two parallel linear explosive charges encased between corrugated metal plates or tubes. These are bolted together to form a rigid assembly that can be towed or pushed by a light or medium tank. The charge is exploded by action of a bullet impact fuze actuated by fire from a machinegun on the tank. Another type (fig. 8-34 and 8-35) consists essentially of a waterproof skid, a rocket motor, and a linear demolition charge. It is towed to the edge of a mine field. The towing vehicle is then moved out of the danger zone by its operator, who electrically initiates a thruster on the kit to remove the main cover. Automatic elevation of a rocket launcher tube occurs as the cover slides from the kit. The operator then electrically ignites the rocket motor which carries the linear charge across the minefield. When the linear charge stops moving, the operator initiates the fuze. This causes the charge to explode.

Figure 8-29. Demolition charge assembly M37

Figure 8-29. Demolition charge assembly M37

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