Tag: Anti Tank Mines

French HPD2A2 Mines in Ukraine

Earlier this week (7 November) Alexander Borodai, the former leader of the self-proclaimed Donetsk People’s Republic now a member of the Russian Duma for the separatist region, was seen in a video showing a near miss with a French HPD 2A2 anti-vehicle mine. The video, believed to have been filmed south of Kherson, showed the lead vehicle of Borodai’s convoy damaged by a mine, while another mine was seen next to his vehicle. The lead vehicle appears to be badly damaged with the front of the vehicle seemingly taking the brunt. If the vehicles was damaged by a HPD 2A2 it is interesting that the 4×4 vehicle was able to set off the mine which is designed to be triggered by heavier armoured vehicles, though some sources state movement of even smaller metal objects near by can trigger the mine. Similary Borodai is lucky not to have triggered the mine’s anti-tamper system.

The mine is clearly identifiable as a French HPD-2A2 with the lot number 01-BT-19. Various sources suggest around 400,000 of the HPD series of mines have been produced and they’re in service with the French, Norwegian, Belgian and Swiss armed forces. From Borodai’s video we can see the mine has a serial number of ‘9131229‘. Another example photographed in early October has the partial serial number ‘91296..’ visible. Both mines are from the same lot and the end digits seem to denote year of manufacture – 2019.

Russian sources suggest the mines have been in theatre since August but the first images of the mines were shared in early July, pictured in the back of a Ukrainian van with German DM-22 off-route mines and DM-31s. Some video was released by a Ukrainian explosive ordnance disposal (EOD) officer in July which is claimed to show a Russian vehicle destroyed by one of the HPD-2A2 mines.

The HPD family of mines (which includes the HPD 1, 2 and 3) began to be developed in the early 1980s by Thomson-CSF and Daimler-Chrysler Aerospac. The HPD2 (or MI AC HPD F2 in French service) was introduced in 1988. The mines use a 3.3kg charge made up of an RDX/TNT mix to create an explosively formed penetrator using the Misznay–Schardin effect. The mines are said to be able to penetrate armour between 100 to 150mm thick. The mines have a 10 minute arming delay once set and can be active for up to 30 day before they deactivate themselves. Because the mine can be triggered by the electromagnetic field of a metal detector it has been said that this contravenes the Geneva Convention’s Protocol II (May 3, 1996).

The HPD-2 is made up of two sections: a fuze assembly with a magnetic influence sensor and a two battery power supply, the self-neutralising system and the arming mechanism and the mine’s explosive charge. It reportedly has an anti-handling device sensitive to motion and the signals produced by metal detectors. The mine is detonated when the seismic sensor reacts to vibrations made by passing vehicles and a magnetic sensor is activated. The magnetic sensor uses variation in the earth’s magnetic field caused by the proximity of a vehicle’s large metal mass. Sources suggest the magnetic sensors is triggered by vehicles over 8 tons.

While there has been no official confirmation the mines are believed to have been provided by France as part of their military aid to Ukraine which has also included VAB armoured vehicles, Mistral short range air defence systems and anti-tank guided missile systems including MILAN and Javelin.

We’ve previously examined the German DM22, Estonian PK-14 and Russian PTKM-1R mines in use in Ukraine.

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Bibliography:

HPD-2 Landmine, CAT-UXO, (source)

MI AC HPD F2 Landmine, Fenix Insight, (source)

HPD Mine, Lexpev.nl, (source)

HPD Mines, Rufor.org, (source)

MI ACH 88, RMS, (source)

State Duma deputy’s security car blows up on French HPD anti-tank mine in Ukraine’s Kherson region, EuroWeekly, (source)

Arms For Ukraine: French Weapons Deliveries To Kyiv, Oryx, (source)

Cold War Weapons: The Off-Route Mine

During the Cold War NATO was understandably interested in capable anti-armour weapons. In this video/article we will examine the Off-Route Mine which features in footage from several British Army training films. They show a team of Royal Engineers setting up an L14A1 off-route mine ready to ambush attacking Soviet tanks.

Unlike a conventional mine which detonated vertically when a vehicle drove over it, the Off-Route Mine would be tripped by a breakwire set across a vehicles likely path. When the wire was tripped or broken the mine’s charge would be electrically detonated and the blast would project horizontally.

An Off-Route Mine in position (IWM)

What the British termed the L14A1 was developed in the early 1970s by France’s state arsenals. In French service it was known as the ‘Mine Anti char à action horizontale Modèle F1′ (or MI AC AH F1). It was manufactured throughout the 1970s and 80s by GIAT Industries.

The mine was essentially an electrically fired shape charge, it used the Misznay-Schardin effect rather than the Monroe effect. The former relies on a shallower, concave shape charge, which has a copper cone that is super heated by the explosion and fired out towards the target. This gave it the ability to project its cone further and removed the need for it to detonate in contact with the target vehicle. 

An illustration of how the Off-Route Mine works from a British Army manual

The mine had an effective range of between 70 to 80 metres and according to the 1977 French manual the projectile created by the detonation could travel up to 6km. In terms of the mine’s effectiveness the same manual states that 40m was the optimal range but no closer than 2m.

The manual also notes that “the slightest obstacle in the trajectory of the projectile (such as earth or shrubs) considerably reduces performance.” The diagram below from a 1977 French Army manual shows the effect of the mine on 70mm of armour at 40m, with 0-degrees of angle.

Effect diagram from 1977 French Army manual

When detonated the mine could throw fragments in a radius of 100m and could throw armour shards from a successful strike up to 200m from the target. The British mines came in the L27A1 kit which included a pair of the L14A1 off-route mines as well as instructions, the break wires, a night sighting tool, and an adjustable stand for mounting.

The mine’s electorally-powered detonator was powered by D cell batteries, which Sappers complained had to be frequently changed. The mine itself weighed 12kg and was packed with just over 6kg of Hexolite explosive. There was also a training version, the L28A1, which fired a paint-filled sponge to mark the side of the vehicle and confirm a hit. 

A Sapper setting up an Off-Route Mine (IWM)

The Miacah F1 was removed from French service in 2001. An improved version, the F2, was manufactured in 1996 and used by the French until the mines were withdrawn in 2004 due to corrosion. While some mines may have remained in stores, as some have been seen as late as 2016, they contravened the 1997 Ottawa Treaty on anti-personnel mines because the break wire could in theory be tripped by a human rather than a vehicle.

It was replaced in British service by the ARGES off-round Anti-Tank Mine which fired a modified 94mm rocket with a tandem HEAT warhead. In 1997 it was reported that 4870 Off-Route mines were held by British Army stores, in line with the Ottawa Treaty this had been reduced to 0 by 1999.

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Bibliography:

Landmine Monitor Report, 2004, Landmine & Cluster Munition Monitor, (source)
Landmine Monitor Report, 2000, Landmine & Cluster Munition Monitor, (source)
CNEMA Report, 2000 (source)
British Army User Handbook, Mine Anti-Tank Kit L27A1 (Off Route Mine), 1980
French Army MIACAH F1 Manual, 1977

Footage:

Fighting In Woods, British Army training film, 1982, (held by the IWM, DRA 1472)
Fighting In Villages, British Army training film, 1979, (held by the IWM, DRA 1401)