Yep... seat belts can kill you too, under certain circumstance; but if only
one life is ever saved by this, isn't it worth it?

NOTHING is foolproof. One cannot prepare for every possibility, we just try
to prepare for as many as practical.

You are correct, in a 'trap' situation, spare air [as I said before] is only
a slim chance device. But shouldn't people be given EVERY chance?

[Walk into a black-damp and you'll wish you had one of these for your
retreat..]

I just didn't want to get into the debate that co2 scrubbing would be more
helpful than air/O2 in a 'trap' situation...
rb



"nitespark" wrote in message
news:wJ7wf.41531$Mi5.37103@dukeread07...


Woody wrote:

If anyone in charge of people's lives is watching... please check these
websites...

for buying time when the air is thin, or blackdamp situations:
http://www.submersiblesystems.com/


I hold a Master Scuba Diver rating and will tell you these things are not
thought of very well in the experienced scuba diving community. They hold
about 3 cft of air. That MIGHT give them 5 minutes of air at best.
Highly unlikely they would have made any difference in this mine disaster.
They were originally designed for military helicopter pilots that crashed
at sea, to give them time to get out of the aircraft and to the surface.