Posted by John Walker on May 10, 2001 at 21:53:13:
In Reply to: Re: Deep Air Survey posted by Steve on May 10, 2001 at 20:06:05:
Steve, how do you build up a tolerance to N2 and O2.
And do you do this the same for both gases?
What is your experience in this subject anyhow?
Thanks in advance, JOhn Walker