Demo mines in SB WW1

[Volcano Man]

IIRC, there is a detonator and you don't have to be in the same hex, but unfortunately I have forgotten how that works (I think the detonator has a radius(?)). In any case that is all experimental and I never used it, and apparently left it in the game by accident, but I am pretty sure I had it working at one time without the need of a unit right on top of it.

So really I guess the answer is that you will have to experiment with the detonator and read in the user and oob editor manuals as you are treading in the (mostly) unknown and experimental.