The P-40 mine is a Vietnamese

Vietnam

Vietnam – sometimes spelled Viet Nam , officially the Socialist Republic of Vietnam – is the easternmost country on the Indochina Peninsula in Southeast Asia. It is bordered by China to the north, Laos to the northwest, Cambodia to the southwest, and the South China Sea –...

 anti-personnel fragmentation stake 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...

. The mines were produced using the spherical steel cases of U.S.

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 BLU-24/B and BLU-66 submunitions on top of which is a plastic adaptor to accept an MUV style tripwire fuze.

The spherical steel case is grooved to aid fragmentation, with the grooves either being internal or external depending on the variant of submunition used as the basis of the mine. The mine is normally mounted on a small three pronged stake and has an effective radius of around 10 meters.

The mine is found in Cambodia

Cambodia

Cambodia , officially known as the Kingdom of Cambodia, is a country located in the southern portion of the Indochina Peninsula in Southeast Asia...

, and Vietnam

Vietnam

Vietnam – sometimes spelled Viet Nam , officially the Socialist Republic of Vietnam – is the easternmost country on the Indochina Peninsula in Southeast Asia. It is bordered by China to the north, Laos to the northwest, Cambodia to the southwest, and the South China Sea –...

.

Specifications

• Diameter: 70 mm
• Height: 104 mm
• Weight: 0.614 kg
• Explosive content: 0.12 kg of TNT