In the 70s in Queens, “Blockbusters” were common.
If it went off next to a person they could be vaporized.
You lit that thing and then ran like Jesse Owens.
Yeah blockbusters were nasty.
Tossed one behind a dumpster which had a stockade fence around it. It blew a good deal of fence out which showered cars with wood chunks all over a parking lot I was traversing to enter a bar, one 4th. I decided to not enter that bar as the patrons filed out to see what all the noise was about