M1 mine

The M1, M1A1 and M4 are circular steel cased United States anti-tank blast mines with a distinctive cross shaped pressure spider.

Variants of the mine have also been deployed in Chad and Tunisia.

Downward pressure on the spider presses down on the head of the fuze, breaks a shear pin, and inverts a belleville spring, flipping the striker downwards into a stab sensitive detonator, triggering the mine.

The M4 version of the mine has two secondary fuze wells so that anti-handling devices can be fitted.

This article relating to landmines is a stub.