Explosive filling: Type 88. Captured document states bursting charge might also be either ammonium nitrate, 50 percent, TNT, 50 percent; or ammonium nitrate, 90 percent; dini-tronaphtalene 10 percent.

Weight of explosive: 4 pounds 8 ounces.

Total weight of mine: 11 pounds 6 ounces.

Color: Brown.

Description: The mine is circular with a slightly concave top and a moderately convex base. The mine case is made of earth-colored terra cotta. The outer surface has thin dull glaze while the inner surface is covered with a thin coat of lacquer.

A rubber fuze seat is sealed in place in a hole in the center of the top of the mine.

The explosive filler is contained in a light rubber bag inside the mine.

The fuze body, cover, plunger, and striker support are made of bakelite. The springs, percussion hammer, striker, and the release fork are the only metal parts in the mine and with the exception of the release fork, all are contained inside the fuze.

Employment: May be used as an antivehicular or antipersonnel mine.

Operation: The mine is placed in the desired location and the safety pin is with-drawn. The fuze may then be rigged to fire either by pull or pressure.

The percussion hammer located within the fuze is held in place by a release fork to which a trip wire may be attached. When the wire is pulled (22- pounds pull required), the fork release the hammer which is forced downward by the hammer spring. The hammer hits the striker forcing it through its bakelite holder into the percussion cap.

When pressure of 20-25 pounds is applied directly on the head of the fuze the plunger spring and hammer spring are compressed causing the hammer head to exert pressure on the hammer release fork. When the plunger is further depressed a groove in its inner sur-face comes down to the level of the hammer release fork. The pressure of the hammer head cams out the fork. The hammer is released and hits the striker which in turn pierces the detonator.

Remarks: A larger model of this mine exists, and differs from it only in size. The larger version has a diameter of approximately 10 1/2 inches.

Figure 158 – Type 3 (a) Antivehicular and Antipersonnel Land Mine.