X-Message-Number: 1967
From: Ralph Merkle <>
Subject: Re: CRYONICS Cold Storage
Date: Mon, 15 Mar 1993 11:54:16 PST

In discussing the relative merits of different storage methods and
the use of different storage temperatures, Brian Wowk said:

>        Yes, the possibility that -130'C storage in the room that Mike 
>is proposing might be *cheaper* and *safer* than dewar storage.

In the following analysis, Brian pointed out the advantages of a new
and larger storage system.  It would be useful to separate out two
issues:

(1) The benefits to be derived from a new design that stores more
patients, achieving economies of scale
and
(2) The benefits to be derived from adopting a higher storage temperature.

Thus, comparing the Bigfoot 4 patient storage system with a proposed
20 patient system that stores patients at -130 degrees centigrade
is mixing two separate issues.  The obvious question is:  what would
be the benefits of (say) a new 20 person liquid nitrogen storage system
and what are the relative advantages/disadvantages of such a system
as compared with the 20 person -130 degrees storage system?

   Cheers!
      Ralph C. Merkle

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