Description
The magnetic mine 158 consists of a 5 3/4 by 2 3/4 by 1 1/2 inch case containing 1 pound of explosive and two bar magnets, one at each end of the mine case. It has a total weight of 3 pounds. The fuze used in this mine is similar to the British lead-break delay fuze in design and functioning. The striker spring is held in expanded position. One end of the spring is attached to the upper end of the striker and the other end of the spring is attached to the base of the fuze.
This mine was designed for use by underground forces to cut railroad tracks and sabotage tanks and vehicles of the opposing force. The safety pin is withdrawn and the mine pushed down the trough from a flatcar. When the mine hits the rail, it is held there by the magnets. The mine explodes after a brief time, which allows the flatcar to travel to a safe position.
Functioning
The striker is restrained by a safety pin and a lead rod. When the safety pin is pulled, the entire force of the expanded striker spring is transferred to the lead rod. The rod breaks after a time lapse determined by the size of the rod and the air temperature. When the rod breaks, it completely releases the striker which fires the mine.
Hazardous Components
Main charge - 1 lb. (0.45 kg)
Physical Data
Length - 5.75 in. (146 mm)
Height - 1.5 in. (38 mm)
Width - 2 in. (51 mm)
See Also
Nothing else to see.
Source(s)
