The M6, M6A1 and M6A2 are a series of metal-cased, circular, heavy anti-tank landmines produced by the United States from May 1944 to May 1945. Work on the M6 mine began in 1943, after the campaigns in North Africa. Testing had revealed the smaller

M1 mine The M1, M1A1 and M4 are circular steel cased United States anti-tank blast mines with a distinctive cross shaped pressure spider. The mine was used during the Second World War and a copy produced in Argentina was used during the Falklands War. A ...

, filled with of

TNT Trinitrotoluene (), more commonly known as TNT, more specifically 2,4,6-trinitrotoluene, and by its preferred IUPAC name 2-methyl-1,3,5-trinitrobenzene, is a chemical compound with the formula C6H2(NO2)3CH3. TNT is occasionally used as a reagen ...

, had difficulties breaking the tracks of heavy tanks such as the

Tiger I The Tiger I () was a German heavy tank of World War II that operated beginning in 1942 in Africa and in the Soviet Union, usually in independent heavy tank battalions. It gave the German Army its first armoured fighting vehicle that mounted ...

, and it was desired that in addition to correcting technical defects with the M1, a heavy mine similar to the German

Teller mine The Teller mine (german: Tellermine) 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 t ...

(with of explosives) be available to American forces. After correction of defects in the T6E1, contracts were issued before the mine was standardized, and it began production in May 1944. The T6E1 was standardized as the M6 in September 1944. Because of a lessening need for antitank mines as the Allies went on the offensive in 1944, the T6E1/M6 was not deployed to the European theater. They were superseded in service after WWII by the larger

M15 mine The M15 mine is a large circular United States anti-tank blast mine, first deployed during the Korean War. 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 Although the M15 has been superseded by the M19 mine ( ...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 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 A Belleville washer, also known as a coned-disc spring, conical spring washer, disc spring, Belleville spring or cupped spring washer, is a conical shell which can be loaded along its axis either statically or dynamically. A Belleville washer is ...

which inverts, flipping the

firing pin A firing pin or striker is a part of the firing mechanism of a firearm that impacts the primer in the base of a cartridge and causes it to fire. In firearms terminology, a striker is a particular type of firing pin where a compressed spring ...

into the detonator, which triggers the adjacent

explosive booster {{unreferenced, date=August 2011 An explosive booster is a sensitive explosive charge that acts as a bridge between a (relatively weak) conventional detonator and a low-sensitivity (but typically high-energy) explosive such as TNT. By itself, the ...

and main explosive charge. The mine is fitted with two secondary fuze wells on the side and bottom to enable

anti-handling device An anti-handling device is an attachment to or an integral part of a landmine or other munition such as some fuze types found in general-purpose air-dropped bombs, cluster bombs and sea mines. It is designed to prevent tampering or disabling, ...

s to be fitted. The M6 and M6A1 variants were fitted with chemical fuzes, the M600 and M601, the later M6A2 used the mechanical M603 fuze. The mines are found in

Angola , national_anthem = " Angola Avante"() , image_map = , map_caption = , capital = Luanda , religion = , religion_year = 2020 , religion_ref = , coordina ...

Cyprus Cyprus ; tr, Kıbrıs (), officially the Republic of Cyprus,, , lit: Republic of Cyprus is an island country located south of the Anatolian Peninsula in the eastern Mediterranean Sea. Its continental position is disputed; while it is ge ...

, Korea,

Lebanon Lebanon ( , ar, لُبْنَان, translit=lubnān, ), officially the Republic of Lebanon () or the Lebanese Republic, is a country in Western Asia. It is located between Syria to Lebanon–Syria border, the north and east and Israel to Blue ...

, Rwanda,

Thailand Thailand ( ), historically known as Siam () and officially the Kingdom of Thailand, is a country in Southeast Asia, located at the centre of the Indochinese Peninsula, spanning , with a population of almost 70 million. The country is b ...

, the

Western Sahara Western Sahara ( '; ; ) is a disputed territory on the northwest coast and in the Maghreb region of North and West Africa. About 20% of the territory is controlled by the self-proclaimed Sahrawi Arab Democratic Republic (SADR), while the ...

, although these may in fact have been M15 mines that were misidentified.

Specifications

* Diameter: * Height: with arming plug * Weight: * Explosive content: of

* Operating pressure:

References

* Jane's Mines and Mine Clearance 2005-2006 * {{ORDATA mines, 7553, M6 series Anti-tank mines Weapons and ammunition introduced in 1944