Out of curiosity...how does the operator know that he is not standing on the tunnel when he squeezes the trigger? Looks like AFHV crotch shot waiting to happen.
I can see sewer pipes exploding in Spokane ... oi!
You don’t, until you pop the thing off. That was one of the problems when blasting gophers (as opposed to squirrels) with the thing. You’d occasionally light off a charge and the gopher tunnel would be directly under your feet.
This sort of thing was another reason why I like White boots, and not these cheapo import work boots. I want a lot of leather and mass between my feet and the outside world on a farm.