SM-70-501, SM-70-601, AND SM-70-701
These are electrically initiated, directional-fragmentation, antipersonnel (apers) landmines fired by a pull/tension-release firing/alarm device. It is believed that the mines may also be command fired. The mines are a primary component of a remote, electronically monitored and controlled, border fenceline emplaced, intrusion system network. The system network deters/detects illegal border crossings, and signals such activity by activating an alarm in a remote command center or guardpost.
The mines (support pipe, fragmentation cone, bracket arm, and firing/alarm device) are olive drab. The closing cap is black. The weather cover may be either light brown or gray plastic. The fragmentation cone may have a red band around the large end of the cone. There are no known markings on the mine.
The fragmentation cone is aluminum. The closing cap and weather cover are plastic. The support pipe, support arms, and bracket arms are iron. The firing/alarm device is made of an unknown metal.
Explosive Weight (g):110 TNT
Frag range (m):100