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To: techdive <techdiver@opal.com>
Subject: Re: "Cold Narc"
From: Richard Pyle <deepreef@bi*.bi*.ha*.or*>
Date: Sat, 7 May 1994 12:34:49 +22305714 (HST)

On Sat, 7 May 1994, Sten Meyer wrote:

> Some time ago I heard a presentation by a professional diver at my University
> on his experiences during a >400m (I think) Trimix chamber dive in Norway.
> This dive was made in the early 1980:ies and at the time it was (an still is?)
> the deepest trimix dive  made. They experinced serious symtoms when they
> switched from trimix to heliox. Two of the three divers were conviced that
> they had yellow birds inside the chamber after the switch.
> 
> Sten Meyer

Sounds like HPNS.....hard to avoid at those depths.  The Comex guys use
hydrogen.

Aloha,

Rich

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