On Jul 15, 2:02*am, John Smith wrote:
Bill D wrote:
BTW, I think Mythbusters had a program on what happens if you break
the valve off a high pressure cylinder. *IIRC, reality didn't quite
live up to the urban myths.

Actually, it did:http://www.youtube.com/watch?v=ejEJGNLTo84

I've been eyewitness to a forklift knocking down a pallet of cardboard
boxes containing 6 x 2l Coke bottles. Several of the bottles went more
than 100m across the ground. (most just bounced harmlessly)