PMN-4
The cover of a PMN-4 mine is black and the body is reddish brown. The diameter is 95mm and the height is 46mm. The explosive charge weight is 55 grams and the total weight of the mine is 300 grams. PMN-4 mines contain a significant amount of metal components, so they are readily detectable with standard mine-detectors. Details of the fuze mechanism are scarce, but it is a delay-armed, pressure-fired blast-mine. Given that the PMN-4 was designed approximately 15 years after the PMN-2, and its explosive filling is significantly smaller, a PMN-4 fuze is probably more sophisticated and/or reliable than its predecessor, in order to compensate for having less destructive power. Similarly, it is almost certain that the PMN-4 is a blast resistant mine.
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