I have tried this idea as many ways possible as I can think,
the biggest problem with the mine detonation is when a tank runs over the mine it causes damage to the point it sets off the destruct engine, unfortunatley since soldiers do not cause damage to thier surrounding environment in OFP you're just kinda SOL. But in code snippets BloodMixer has some good files as do a few others. But I agree with you that it should be doable , I tried to tinker with making a mine sort of as a vehicle with the ( getInRadius= whatever
and when the soldier gets within the getinRadius it would setDammage 1 causing the destruct engine to initiate but as far as I know this command can only be done in the init field
of the editor. If you ever get this sucker figured out lemme know cause AP mines are a part of war { nasty as they may be}