My brother filled a couple of garbage bags with acetylene once. Left a crater just like that.
I have a friend whose son did the same. He used a weather balloon and put it inside a junk van that was being scrapped. They found the hood a 1/4 mile from the crater. There were 911 calls for that, too. It was a prank.
“My brother filled a couple of garbage bags with acetylene once. Left a crater just like that.”
It would have to be an acetylene-oxygen mix.
My co-worker and I made an acetylene cannon once.
Put a tennis ball in it.
After we figured out the best way to ignite it (arc welding stick at a hole near the bottom) the thing went off with a ten foot flame shooting out the front.
Tennis ball landed on top of a 5 story building about 600 feet away
I filled a milk jug with acetylene and OXYGEN! from a cutting torch.
I ran a 10' piece of conduit into it and lit the faraway end.
Made a whistling noise as it zipped down the pipe.
Made a BIG! boom when it got to the jug!
(Did I mention I was behind a 4*8 sheet of plywood at the time?)
It left a 1" deep impression of the jug in the ground and a loss of hearing for a while.
When I was a kid I put some calcium carbide into a plastic gallon milk jug and added water and screwed the cap on. Poked a hole in the side so the gas could escape then squeezed it and lit the gas coming out. It was very cool until I stopped squeezing the the flame got sucked into the jug. BOOM! My ears rang for 3 days.