The Type 99 (Hako-Baku-Rai) mine was a Japanese anti-tank weapon used during the Second World War.

Once the safety pin was removed, it was armed, striking the fuze ignited a powder delay train.

[1] Burma-based British forces carried out tests of captured Type 99 mines on Stuart and Lee tanks and found the mine to be extremely effective against armor of 20 mm or less but largely ineffective against armor of 35 mm or higher.

Japanese doctrine called for infantry, usually hiding along the side of the road, to throw the Type 99 mine against horizontal surfaces at a distance of 2 to 3 meters.

Usually infantry would emplace the mine on top metallic surfaces, such as a tank engine deck[2]