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Date: Thu, 22 Jan 1998 17:05:58 -1000 (HST)
From: Richard Pyle <deepreef@bi*.bi*.ha*.or*>
To: "William M. Smithers" <will@tr*.co*>
Cc: TechDiver <techdiver@aquanaut.com>, rebreather@nw*.co*
Subject: Re: Argox for safer deco?

> I've heard of Argox basically being used as an 
> experimental deco gas, but not regularly or seriously.
> 
> Anybody know why?  In theory, Argox should give
> all the advantages of deco on 100% O2, while
> totally eliminating O2 toxicity concerns. 

I haven't read the long list of responses to this yet, so I'll just 
provide a comment here in front that may or may not have already been put 
forth on this thread.

If you step back and look at the grand picture of decompression theory 
and practice, it really all boils down to the three words used by Bill 
Hamilton:  "What works, works."  

We know most about "what works" with nitrogen, somewhat less about "what 
works" with helium in saturation situations, and considerably less about 
"what works" with helium in sub-saturation situations.  We know very 
little about "what works" for decompression with other gases, such as 
Argon and Neon.

A few courageous souls (I am not among them) have found enough faith in
theoretical explanations of deco to experiment with alternative breathing
gases (such as Argon and Neon). But so far, it seems, the empirical data
obtained from such experiments have not yet demonstrated enough of an
advantage to encourage more individuals to perpetuate additional 
experiments (i.e., most forlks, at this point, are "more comfortable with 
the devil they know").

Hope that helps...

Aloha,
Rich

Richard Pyle
Ichthyology, Bishop Museum                deepreef@bi*.bi*.ha*.or*
1525 Bernice St.                          PH: (808) 848-4115
Honolulu, HI 96817-0916                   FAX: (808) 841-8968
       "The views are those of the sender and not of Bishop Museum"

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