MSM MK2 mine

The MSM MK2 (also known as the PM-87) is a Finnish belly attack anti-tank mine. The mine has a circular ribbed plastic case that is tapered towards the bottom. It uses an electronic fuze with a combination magnetic and seismic fuze; it also has an anti-handling device. The mine is armed by inserting an arming pin, which completes an electronic circuit. The mine indicates that it is armed by lighting a small LED light which switches off after 10 minutes. When a vehicle approaches, vibrations travelling through the ground trigger the seismic sensor, which activates the magnetic sensor. When a vehicle passes over the mine, the warhead is triggered. First a clearing charge fire, removing up to 100 millimeters of earth from the top of the mine, then a copper-lined Misznay Schardin effect warhead is triggered. This projects a slug of copper at high velocity into the bottom of the target.

PM-87

The mine is believed to be in Finnish service.

Specifications

Diameter: 270 mm
Height: 150 mm
Explosive content: 4 kg of Composition B

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References

Jane's Mines and Mine Clearance 2005-2006

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