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The MPP-B "Wierzba" is a fibreglass Polish minimum-metal anti-tank blast mine.
The mine is similar to the Russian TM-62 series and is compatible with the same fuzes.
It is normally used with a MWCz-62 fuze with a clockwork armng delay, which is a copy of the Russian MWCh-62.
The mine has a secondary fuze well in the base of the mine for anti-handling devices or for a command detonation device.
It can also be used with a ZMN electronic combined pressure and magnetic influence fuze.
The mine is currently in service with the Polish armed forces.

Diameter: 320 mm
Height: 128 mm
Weight: 9.7 kg
Explosive content: 8.1 kg