` ::Nope, not at all, thanks for the condescending attitude though. What I might have missed was what Nick said, gas canisters for propane tanks, which so far as I'm concerned is perfectly legitimate misunderstanding. ::That said, most propane tanks gas cylinders have releases to allow for safe de-pressurization when they are under heat or contents under pressure. So in that way, this still calls into question whether this should really be called a ``bomb``. `