Hi David,

The "expensive stuff" is urea, which I believe is a by-product of
liquefaction of natural gas.

Best regards,

Tony

('84 Vanagon Reimo)

----------- Original Message ------------

Date:    Sat, 30 Nov 2002 15:57:36 -0500
From:    David Brodbeck <gull@CYBERSPACE.ORG>
Subject: Re: Road Salt in Wa State- We need to protest!

On Fri, 29 Nov 2002, Larry Alofs wrote:

>I suspect that the "expensive stuff" may promote rust just as much as
>ordinary salt.
>   Matthew?

I know there's some kind of "expensive stuff" they put on aircraft
runways
because it corrodes aluminum less than salt.

For a while some Michigan counties were also putting some "expensive
stuff" on roads for a mile on each side of bridges, to try to prevent
the
salt from corroding the steel reinforcing bars in the concrete.
             _ _
  __ _ _   _| | |  | David M. Brodbeck (N8SRE)          Ypsilanti, MI

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