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PC: Horseshoe Curve

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The Horseshoe Curve pictures on the PC Web Pages brough back a question I have 
had for a while.  

The uphill tracks are a much light color that the downhill tracks.  Is this 
from sand on the uphill and brakeshoes on the downhill, coal from loaded 
hoppers on the downhill, or some other reason.


Bengt Muten,  694 Great Road, Littleton, MA 01460
voice 508-486-8552, fax 508-486-3976, internet muten -AT- muten.com
(URL) http://www.tiac.net/users/muten/bengt.html

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