The PM-79 is a small circular Bulgaria

Bulgaria

Bulgaria , officially the Republic of Bulgaria , is a parliamentary democracy within a unitary constitutional republic in Southeast Europe. The country borders Romania to the north, Serbia and Macedonia to the west, Greece and Turkey to the south, as well as the Black Sea to the east...

n blast resistant

Blast resistant mine

A Blast resistant mine is a landmine with a fuze which is designed to be insensitive to the shock wave from a nearby explosion. This feature makes it difficult or impossible to clear such mines using explosive minefield breaching techniques. As a result, the process of clearing minefields is...

 anti-personnel mine

Anti-personnel mine

Anti-personnel mines are a form of land mine designed for use against humans, as opposed to anti-tank mines, which are designed for use against vehicles...

, superficially similar to the Russia

Russia

Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

n PMN

PMN mine

The PMN series of blast anti-personnel mines were designed and manufactured in Russia. They are one of the most widely used and commonly found devices during demining operations.-PMN-1:...

. The mine uses a unique trigger design; on the top of the mine, beneath a thin rubber cover is a dish shaped pressure plate. Pressure on the outer rim of the dish shaped plate levers up a central post, which triggers the mine. The mine also incorporates a mechanical arming delay using a pin cutting through a thin lead strip. The mine arms in between two minutes and four hours depending on the temperature.

The mine has been withdrawn from Bulgarian service, although it is sometimes found in parts of Asia.

Specifications

• Diameter: 100 mm to 88.2 mm
• Height: 55 mm
• Weight: 255 g
• Explosive content: 78.3 g TNT
• Operating pressure: 5 kg or more