The Na-Mi-Ba is a Czechoslovakia

Czechoslovakia

Czechoslovakia or Czecho-Slovakia was a sovereign state in Central Europe which existed from October 1918, when it declared its independence from the Austro-Hungarian Empire, until 1992...

n minimum metal

Minimum metal mine

A minimum metal mine is a land mine that is designed to use the minimum amount of metal in its construction . Both minimum metal anti-tank and anti-personnel mines exist. Some designs contain almost no metal at all...

 bakelite cased anti-tank blast mine

Anti-tank mine

An anti-tank mine, , is a type of land mine designed to damage or destroy vehicles including tanks and armored fighting vehicles....

. The mine uses a horizontal lever fuze, with a very low operating pressure that breaks open a glass capsule containing acid, which initiates a flash composition. The mine has a small main charge, and is normally used as the initiator for larger charges. The low operating pressure means that the mine could be used as an 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...

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The mine is no longer in service with the Czechoslovakian armed forces.

Specifications

• Diameter: 200 mm
• Height: 250 mm
• Explosive content: 2.2 kg of TNT
• Operating pressure: 2.2 kg