Hi Maire,

Here's another point worthy of consideration.

If your chap is in the middle of nowhere and his orthosis (es) fracture then what good will all the theory do him - or you? If you want to be safe, and you're only getting one shot at it, then look for the option with minimal risk. By the way, I was serious about contacting the AMWC in Plymouth. They have to live and function efficiently at -40 for extended periods of time. At the end of the day there is no substitute for experience...

Good luck,

Steve

At 11:09 AM 10/09/2004 +0100, you wrote:
>Thanks Steve.
>Maire
>
>----- Original Message -----
>From: "Stephen Urry" <[log in to unmask]>
>To: <[log in to unmask]>
>Sent: Friday, September 10, 2004 10:21 AM
>Subject: Re: Suitability of orthotic materials in extreme cold
>
>
>Hi Maire,
>
>I don't think it matters too much. The temperature in your boot shouldn't get
>anywhere near -40. If it does, then the last thing you'll be worrying about
>is what material your orthoses are made of. I've taken my own EVA  devices
>to -30 and they didn't appear to be appreciably different to +30. If your
>chap is really worried, tell him to keep his orthoses in his boots when he
>has them on or in his sleeping bag when he has it on. He'll be fine. Failing
>that, 'phone the Royal Marines in Plymouth and ask someone in the Arctic and
>Mountain Warfare Cadre for advice - their insoles used to be plastazote and
>aluminium foil (HM Government was never renowned for spending too much on
>troops footwear).
>
>Regards,
>
>Steve
>
>
>Stephen Urry PhD
>Lecturer
>School of Public Health
>Queensland University of Technology
>Brisbane
>4059
>Australia
>
>CRICOS No 00213J
>
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Stephen Urry PhD
Lecturer
School of Public Health
Queensland University of Technology
Brisbane
4059
Australia

CRICOS No 00213J

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