M7 mine

Last updated

The M7 is a small, metal-cased United States anti-tank blast mine that was used during the Second World War. It was based on the British Hawkins grenade. Approximately 2.5 million were produced before production ceased, and although it has long since been withdrawn from U.S. service, it can be found in Angola, Burma, Cambodia, Chad, Eritrea, Ethiopia, Korea, Lebanon, Myanmar, Somalia, Thailand, and Zambia.

Anti-tank mine form of land mine designed for use against armored vehicles (including tanks)

An anti-tank mine is a type of land mine designed to damage or destroy vehicles including tanks and armored fighting vehicles.

Hawkins grenade British anti-tank hand grenade used during World War II

The grenade, hand, anti-tank, No. 75, also known as the "Hawkins grenade" was a British anti-tank hand grenade used during World War II. It was one of a number of grenades developed for use by the British Army and Home Guard in the aftermath of the Dunkirk evacuation. The grenade first appeared in 1942, and was designed to be more versatile than previous grenades, such as the No. 73 grenade and the sticky bomb.

Angola country in Africa

Angola, officially the Republic of Angola, is a west-coast country of south-central Africa. It is the seventh-largest country in Africa, bordered by Namibia to the south, the Democratic Republic of the Congo to the north, Zambia to the east, and the Atlantic Ocean to the west. Angola has an exclave province, the province of Cabinda that borders the Republic of the Congo and the Democratic Republic of the Congo. The capital and largest city of Angola is Luanda.

Contents

Description

The mine has a thin olive green painted steel case, with a large hinged pressure plate. This plate transfers force onto the mine's fuze. The fuze is triggered by relatively low pressures, making the mine effective against trucks and cars. Additionally, the fuze may be sensitive enough to make it effective as an anti-personnel mine. The mine was normally deployed inside a cloth bag or sack to prevent rocks getting trapped under the hinged lid of the mine. The mine only has a small main charge, so was typically deployed in lines or rows of up to five mines to be effective against tanks.

In military munitions, a fuze is the part of the device that initiates function. In some applications, such as torpedoes, a fuze may be identified by function as the exploder. The relative complexity of even the earliest fuze designs can be seen in cutaway diagrams.

Anti-personnel mine form of land mine designed for use against humans

Anti-personnel mines are a form of mine designed for use against humans, as opposed to anti-tank mines, which are designed for use against vehicles. Anti-personnel mines may be classified into blast mines or fragmentation mines, the latter may or may not be a bouncing mine.

Several variants of the mine were produced, and two chemical (the M600 and M601) and one mechanical fuzes (the M603) were developed for the mine. A secondary fuze well may be fitted to the mine for anti-handling devices. The most common type of booby trap detonator is the M1 pull which is installed in the end fuse well. This can be attached to a trip wire or a small stake underground for anti-removal detonation. Command detonations can be achieved by screwing in an electric cap adapter and firing it with a demolition firing machine. It can even be detonated by installing a standard firing coupler with a fuse cap and safety fuse.

Specifications

Tetryl chemical compound

2,4,6-Trinitrophenylmethylnitramine commonly referred to as tetryl (C7H5N5O8) is an explosive compound used to make detonators and explosive booster charges.

Variants

Related Research Articles

QF 3.7-inch AA gun

The QF 3.7-inch AA was Britain's primary heavy anti-aircraft gun during World War II. It was roughly the equivalent of the German 88 mm FlaK and American 90 mm, but with a slightly larger calibre of 94 mm. Production began in 1937 and it was used throughout World War II in all theatres except the Eastern Front. It remained in use after the war until AA guns were replaced by guided missiles beginning in 1957.

Tellermine 42

The Tellermine 42 (T.Mi.42) was a German metal-cased anti-tank blast mine used during the Second World War. The mine was a development of the Tellermine 35 with improved resistance to blast. It was followed by the simplified Tellermine 43.

Tellermine 43

The Tellermine 43 was a German circular steel cased anti-tank blast mine used during the Second World War. It was a simplified version of the Tellermine 42, which enabled simpler production techniques. Between March 1943 and the end of World War II, over 3.6 million Tellermine 43s were produced by Germany. Copies of the mine were produced by several countries including Denmark (M/47), France and Yugoslavia (TMM-1).

PMN mine

The PMN series of blast anti-personnel mines were designed and manufactured in the Soviet Union. They are one of the most widely used and commonly found devices during demining operations.

M15 mine

The M15 mine is a large circular United States anti-tank blast mine, first used during World War Two. Essentially, it is a larger version of the M6A2 anti-tank mine, which it replaced. Although the M15 has been superseded by the M19 mine, the U.S. retains large stocks of M15s because they are still regarded as reliable and effective weapons. When used against main battle tanks the M15 is primarily a "track-breaker" which creates mobility kills, but has a comparatively small likelihood of causing crew fatalities. However, when used against lighter vehicles such as APCs or unarmored vehicles such as trucks the damage inflicted is much more severe.

VS-50 mine

The VS-50 is a circular plastic cased anti-personnel blast mine, formerly manufactured by the now-defunct Valsella Meccanotecnica SpA, an Italian high-tech defence industry specialized in area denial systems which was also the manufacturer of the Valmara 69 and one of the first industries in the world to implement plastic construction for landmines. The design is similar to the TS-50 and VS-MK2 mine. It is blast resistant and can be used in a minimum metal configuration. Though unlikely to kill, the explosive charge contained within a VS-50 is quite sufficient to destroy the victim's foot: the blast is capable of penetrating 5 mm of mild steel leaving an 80 mm-diameter hole.

The PM-60 or K-1 is a German round plastic cased minimum metal anti-tank blast mine. The case of the mine consists of two halves joined together by sixteen plastic nuts, giving the mine a distinctive appearance. The top of the mine has a large pressure plate which rests on top of the fuze assembly. Two fuzes are available for the mine, a conventional ball bearing retained striker and a chemical fuze, containing a glass ampule of acid over a flash composition. When the mine is deployed with the chemical fuze it is very difficult to detect because the only metal in the mine is the detonator capsule. There is a secondary fuze well on the bottom of the mine that can accept a fuze allowing remote command detonation of the mine.

The PRB M3 and PRB M3A1 are plastic cased minimum metal anti-tank blast mine produced by the Belgian company Poudreries Réunies de Belgique in the 1970s and 1980s. The mine is square with an olive drab body constructed from polythene with a webbing carrying handle on the side and an ammonia-free bakelite seating for the pressure plate to be screwed into. The fuze well is in the centre of the seating, with the pressure plate screwed into it after the fuze has been inserted. The cylindrical pressure plate consists of two plastic plates, one of which moves under the weight of a vehicle driving over the mine to transmit the force to the fuze, shearing pins which hold it in place.

The M6, M6A1 and M6A2 are a series of metal-cased, circular anti-tank landmines produced by the United States; they were superseded in service by the larger M15 mine. The mine is normally painted olive green and has a large central pressure plate. In the center of the pressure plate is an arming plug that has an arming lever with three settings: ARMED, DANGER and SAFE. The pressure plate rests on a concertina-like structure, which when enough force is applied is compressed. Compression results in a transfer plate under the arming plug pressing downwards onto a belleville spring which inverts, flipping the firing pin into the detonator, which triggers the adjacent explosive booster and main explosive charge.

TMA-4 mine

The TMA-4 is a circular plastic cased Yugoslavian minimum metal anti-tank blast mine. It is a modernized version of the TMA-3. The mine is basically a cast block of TNT with three fuze wells cut into it, encased in plastic. Three black plastic UTMA-4 fuzes are installed into the top surface of the mine. A thin rope carry handle is also provided. The small pressure plate area of the fuzes make the mine resistant to overpressure from explosive demining techniques. Additionally the low metal content of the mine make it very difficult to detect. Although no secondary fuze well is provided, it is possible that the mine could be fitted with improvised anti-handling devices.

TM 65 mine

The TM 65 is a circular Finnish minimum metal anti-tank blast mine. It is broadly based on the Russian TM-62 mine. The mines body is made from a thin shell of fibreglass over a cast block of explosive, with a central fuze well that holds the pressure fuze. The original TM 65 used a US-65 fuze as used in the SM-65 anti-personnel mine, the later TM 65 77 uses a pressure fuze similar to the Russian MV-5 fuze called Painesytytin 77.

The FMK-1 is a small circular Argentina anti-personnel blast mine which, when fitted with a stiffened pressure plate, is also used as the fuze for the FMK-3 and FMK-5 anti-tank mines. The mine has a circular plastic body, with a number of small ribs running vertically around the outside of the mine, with the circular detonator and striker protruding on each side. The pressure plate has a distinctive six pointed star shape ribbing for stiffness. The bottom of the mine has small base plug inside which a small stud is installed. The stud increases the activation pressure of the mine. A metal detector disc can be added to the bottom of the mine, but it is not often used. It is actually in service with the Argentine Army.

The PDM amphibious mines are series of Soviet anti-vehicle mines that could be used on or in beaches, rivers, lakes and shallow coastal waters up to five meters deep.

Teller mine

The Teller mine was a German-made antitank mine common in World War II. With explosives sealed inside a sheet metal casing and fitted with a pressure-actuated fuze, Teller mines had a built-in carrying handle on the side. As the name suggests the mines were plate-shaped.

Anti-handling device

An anti-handling device is an attachment to or integral part of a landmine or other munition e.g. some fuze types found in general purpose air-dropped bombs, cluster bombs and sea mines. It is designed to prevent tampering. When the protected device is disturbed, it detonates, killing or injuring anyone within the blast area. There is a strong functional overlap of booby traps and anti-handling devices.

Mk 2 mine

The Mark II mine or A./T. Mine G.S. Mk II was a British anti-tank blast mine used during the Second World War. It consisted of a body about seven inches (18 cm) in diameter and two inches high (5 cm). The mine has a central fuze well accessed from the bottom, with a main charge in a cavity around the well consisting of about 4 pounds (1.8 kg) of TNT. The mine is fitted with a thin brass cover, which acts as a pressure plate. The cover is suspended over the main body of the main by four leaf springs. A Sorbo ring made of Sorbo rubber can be fitted between the cover and the mine body, which absorbs shock and blast and allows the mines to be planted as close as two feet (61 cm) without causing sympathetic detonation.

The VAR/40, VAR/100 and VAR/100/SP are Italian anti-personnel blast landmines produced by the Tecnovar italiana S.p.A. company.

A contact fuze, impact fuze, percussion fuze or direct-action (D.A.) fuze (UK) is the fuze that is placed in the nose of a bomb or shell so that it will detonate on contact with a hard surface.

References