This is mine. It is a model of an actual grain elevator in my small home town. The C&NW cowboy line is long abandoned, but the elevator remains and is still in use for truck traffic. The grain is elevated from the pit on the back side, by means of a conveyor with buckets attached, and deposited in several bins awaiting loading. The engine would unhook from its train and spot a couple of box cars for loading. The cars were moved to load the 2nd car by mechanical means. Often the empty would come in from the wrong direction, (from the east where the big terminals are located) 
and need to be placed on the siding for further movement by means of a "flying" switch manuver.
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