164 lb:
https://youtu.be/edRbcTXAijY (5:57, detonation just after 2:10, slow motion just after 2:55)
The barn was "severely fragmented."
101 yards from firing point.
I thought unlicensed individuals were only allowed to mix 10lb of binary explosives, on site, without transportation, for theatrical purposes. I guess yoo tube counts as "theatrical purposes." That might not be the latest poop on that subject, but I noticed the perpetrator was masked in the barn demolition.
Wedding dress demolisher had a "bomb tech" there, though, whatever that means.
I guess that was her 15 milliseconds of fame.
Terry, 230RN