underseacolony.com : A Real Undersea Colony

From: spacesettlers@yahoogroups.com
[mailto:spacesettlers@yahoogroups.com] On Behalf Of joe@...

> Keeping pressure out is much harder than keeping it in,
> and if you don't keep it out (even as you do EVAs), then
> your people will be saturated with nitrogen, risking death
> from the bends and (below 30 m or so) nitrogen narcosis.
> Unless of course you have them all breathing hydrogen
> rather than nitrogen, which would be amusing.

My understanding is that they can replace nitrogen with helium, but that
there are limits to that approach.

I've also heard it said that above a certain pressure, oxygen itself
becomes a poison. Hard to see a way to work around that.

Regards,

Mike Combs