X-Message-Number: 32706
Date: Tue, 13 Jul 2010 07:02:21 -0700
Subject: Re: A proposal for a cryonic grave
From: Keith Henson <>

On Tue, Jul 13, 2010 at 2:00 AM, Roko Mijic <> wrote:

snip

> However, it
> is not clear whether such a vacuum could feasibly and reliably be
> maintained for 100 years. Further investigation is required.

Sorry to say but the answer is no.  At least not at the current state
of the art.

Over decades of time hydrogen leaks into the vacuum right through the
metal walls.

The dewars Alcor uses have to be pumped out once in a while.

Keith

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