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From: <CaptnDale@ao*.co*>
Date: Mon, 31 Jul 2000 22:14:19 EDT
Subject: Re: DIR talk vs DIR diving
To: gzambeck1@me*.ne*
CC: mjblackmd@ya*.co*, techdiver@aquanaut.com
In a message dated 7/31/00 8:58:00 PM Central Daylight Time, 
gzambeck1@me*.ne* writes:

<< So your willing to say that a MK10  used 200 ft under the ice on air,
set 
to these
 pressures (125 to 145 psi above ambient) is not going to freeze up on me?  
Is this
 statement also good for Trimix (TX12/45) at 330 under the above condition?.  
This
 is in consideration of the specific heat of the gas mixtures. >>

No, Greg, that is not what I said.  In fact, an MK10 set to 145psi at 200 
feet under ice would would have a higher potential for freeze-up than I would 
be comfortable with.  My choice would be an MK14 set to 125psi.  As for the 
differences with tri-mix, you tell me.  You are the thermal engineer.

Safe diving,
Dale
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