Description
This antitank mine is one of the most widely used of all the nonmetallic types. Four models are produced; all are basically similar but differing slightly in weight and dimensions. The main feature is the hinged lid lip which overlaps the box and is recessed in the center to fit over the protruding end of the pull fuze striker, Two staples are provided, one placed on each side of the recess, to accommodate a pin that passes through the eye of the striker retaining pin. In this case the pull fuze is actuated by pressure.
These mines are generally emplaced in pattern to immobilize tanks and other vehicles, to protect various troops, positions, and equipment, and to halt and delay enemy advance.
As improvised boobytrapping of this mine is easy, it should be blown in place, except when silent lifting is required.
Other models of this mine differing from the YAM-5 only in size and explosive content are shown in TM 5-223A, Soviet Mine Warfare Equipment (1951).
Functioning
Application of approximately 300 pounds of pressure on the lid collapses it, forcing the overlapping edge down. The wooden peg (or nail or wire) passed through the eye of the striker retaining pin is also pushed down, removing the striker retaining pin and actuating the fuze. Some of these mines may have sawed grooves on the underside of the lid, which reduce the required operating pressure to much less than 300 pounds.
Hazardous Components
Main charge - Amatol or ammonite, 12 lbs. (5.45 kg)
Booster - TNT, 7 oz. (196 grams)
Physical Data
Length - 19.5 in. (495 mm)
Height - 3.7 in. (94 mm)
Width - 7.4 in. (188 mm)
See Also
Source(s)
Afghanistan Ordnance ID Guide, Volume 1 (2004)
TM 5-280, Foreign Mine Warfare Equipment (chg 1, 1971)
TM 5-223A, Soviet Mine Warfare Equipment (1951)
