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Thats nothing compared to what an M80 would do.
When I was a kid we would take 6 soda cans, cut the top & bottoms off except for one which would be the base with the bottom left on, tape them all together to make a bazooka, poke a hole in the top of the bottom one, pour lighter fluid in, swish it around to evenly spread the fluid. load tennis ball and ignite. It would send that tennis ball 100 yds and you would wars in the park with a bunch of us setting these things off at each other, and the parents thought it was fun to watch!!!
My guess would be this type of "bomb". Caught my teenage son doing these in the back yard a few years ago... Very impressive boom.It was probably a aluminum foil/draino bomb. The draino is very caustic and can cause burns or blindness if you got it into your eyes. If it was that, then it was a very dangerous thing, and it was right they got arrested.
When I was a kid we would take 6 soda cans, cut the top & bottoms off except for one which would be the base with the bottom left on, tape them all together to make a bazooka, poke a hole in the top of the bottom one, pour lighter fluid in, swish it around to evenly spread the fluid. load tennis ball and ignite. It would send that tennis ball 100 yds and you would wars in the park with a bunch of us setting these things off at each other, and the parents thought it was fun to watch!!!