Quote Originally Posted by 68Charger View Post

more recently, I was bored a "few" years ago on 4th of July, and disappointed with the lack of fireworks... decided to fill a small balloon (maybe 10-12" diameter) with acetylene/oxygen mix from a cutting torch. set it off with a long (not nearly long enough) fireplace lighter.

I didn't hear anything significant from my right ear for 2-3 days... what was amazing was that I >swore< I heard the boom echo 3 or 4 times (must have been from my left ear, I thought I'd blown my right eardrum out) Each echo would have been from a specific ridge/range, and made sense as I recounted them...
I was suspended for 3 days at Lakewood High for setting off one of those in the welding hood in the metal shop. These days, if a kid did that, they'd be at Gitmo so fast it would seem like teleportation.

Rumor has it that a 2 lb oxygen bottle loaded with a pound of FFF will pretty much erase a 15 foot long concrete foot bridge, about 30 years ago...