Tony:

After all these years, I still TYPE nickel with wrong spelling. Sorry!

You are right of course about my slightly confused message
re:determining material to be stainless. Been a bunch of years
(actually a decade or two) since I was doing that type of stuff with any
regularity.

Max
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email: m_robin@...

smail: Max S. Robin, P.E.
Cheat River Engineering Inc.
23 Richwood Place / P. O. Box 289
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Max Robin said:

Driver tires were made
of nickle silver (determined by spectroanalysis and grain structure on
electron microscope).

Grain structure ain't gonna tell you a thing, electron microscopy or not,
as whether it's stainless. But spectroanalysis in that microscope, sure.
And BTW, Max, it's really "nickel."

Tony Thompson Editor, Signature Press, Berkeley, CA
2942 Linden Ave., Berkeley, CA 94705 http://www.signaturepress.com
(510) 540-6538; fax, (510) 540-1937; e-mail, thompson@...
Publishers of books on railroads and on Western history