We had a bunch of older AT mines that had a screw in detonator ( or 3-4 actually including on on the bottom /under ).
They could be brought down from vehicle type weight to detonate to person weight by placing metal objects like a bolt inside the hole were the detonator sat . ( The detonator was quite touchy -the metal surrounding it needed a certain pressure -adding the bolt it acted like a primitive firing pin ).
I also saw a lot of different types in Jugoslavia- Jugos,Italian,US ,CCCCP , etc etc.
Many could be tampered with by filing a notch away here ,cutting a spring in half there etc .I guess that even if it looks to be your standard PROM type mine ,there is no telling straight away what will make it go boom -if indeed it does.It could be old,modified,faulty in a good/bad way etc .Mass produced stuff -maybe of poor quality - that is left outside in the ground etc for months,years...Variables add up to a big ?
Another thing -when I took my demining -mining course we were clearly instructed that placing mines required careful mapping in 4 copies-squad,platoon,company and batallion.(To be forwarded by co platoon) . Also -the minefield was to be marked by signs ,fenced of by barbed wire or fencing wire, marked by tape .This is required by the laws of war -failure to do so is in fact a war crime.
I think I need to get my party into a minefield soon - the suspense as they perform their COMBAT ENGINEER CHECK : Average difficulty time after time to get out should make for suspense and good times all around.
