Photo By: Kevin Morgan
 

I do not claim to understand the details of how steam engines work. My elementary understanding stops at "fire is created to boil water to create steam to drive pistons". Periodically, a certain amount of water must be dumped via a valve underneath the cab.
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Saturday, July 21, 2018 at 3:35:00 PM
image date



Location Information
City or County and State
Cheyenne, WY

Subdivision
Laramie (UP)

Milepost or Control Point
Cheyenne Depot




Train Information
Railroad
Union Pacific
Model
4-8-4
Unit Number
UP 844

Symbol
SCYDV-21
   



Photo Information
Camera Make/Model
Canon / Canon EOS-1D Mark III
ISO
800
Flash
Did Not Fire

Focal Length
100 mm
Shutter
1/60 seconds
Aperture
f/5


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