Nice view; it shows the black, oily texture of a busy steam servicing area. I can figure out most of what is shown except what are those pipes on the right doing?
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Notice the sanding tower on the extreme right, and the other sanding tower just above 173 behind the coaling tower. I believe that the pipes in question supply dry sand to the towers but I'm not quite sure; could also be air pipes to supply pressure to force the sand out of the towers.
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