Posted by RaiderKarl on March 23, 2001 at 11:02:52:
In Reply to: Re: Why not 40% O2 and 60% He? posted by MHK on March 23, 2001 at 09:33:26:
its risky forming opinions about technical subjects before you take the class, read the book, or get the specialty C-card.
in order to dive and explore below 100' is why i signed up to take the class, and read the book, to get the specialty C-card.