Valves on engine #10On top of the steam dome are two safety valves and of course the whistle. Next is the main steam valve and the "side stack" valve as well as the "air valve" albeit hard to see.
Photographed by Rich Currie, November 3, 2006.
Added to the photo archive by Rich Currie, November 12, 2006.
Railroad: Mt. Washington Cog Railway.
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