Description
The MDM magnetic road mine consists of a bronze box 12 inches long, 8 inches wide, and 4 inches high. The box contains about 2 pounds of explosive. The explosive is housed in a zinc container in the center of the mine. Surrounding the explosive charge are two 3-volt dry cell batteries, three induction coils, and a relay. A contact is attached to the inner end of a plunger which projects through one corner of the lid. The outer end of the plunger is attached to a lexer arm, pivoted in the center of the box. A magnet is attached to the other end of the lever arm. A short length of time fuze connects the contact with the charge.
This mine is employed as an anti transport mine laid in roads or railroad beds on a supplementary charge.
Functioning
When a large metal object, such as a tank, railway car, or truck, passes over the mine, the magnet on the end of the lever rises. As the magnet rises, the lever arm pivots and depresses the plunger at its other end. The plunger closes the contact and tires the mine.
Hazardous Components
Main charge - 2 lbs (0.91 kg)
Physical Data
Length - 12 in. (305 mm)
Width - 8 in. (203 mm)
Height - 4 in. (102 mm)
See Also
Nothing else to see.
Source(s)
TM 5-280, Foreign Mine Warfare Equipment (1963)
TM 5-223A, Soviet Mine Warfare Equipment (1951)
