Not sure what this was, I asked former B&M officer Bruce Nelson. His reply: "What you are referring to was called a hump yard, no hump per say. Switch lead (stub ended) had a gradual incline, as did the east end of the class tracks. There were no retarders. I would guestimate about 90% of cars classified were empties, so that's how they got away with it. All the Pin Puller needed was a nudge in slack to pull pin and cars would roll away. Sometimes (it was) not necessary to stop the drag being switched."

Photographed by Ken Patton, February, 1975.
Added to the photo archive by Ken Patton, July 15, 2023.
Railroad: Boston & Maine.

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