Furnace This is a 1956 furnace. It was used to forge wheels, casings, and parts for the axel shop. Similar Images ...based on the tags: furnaces, machinery, orange, rusty, skylights... A long exposure of the side of the coke ovens, lit by the nearby streetlights. I love the ‘hats’ on the top of the SWP-4 headhouse. FP-100C. “The fresh snow mixed indistinguishably from the ashes of the half-demolished power plant.” The coal crusher (above) and the conveyor (left) to bring the powdered coal to furnace hoppers (right). Two charmers, I’m sure. This area was a coal pit for the nearby power plant. In case power was lost, this manual signal could direct trains on and off the taconite trestle. Turning the pole would change the color of the light on top and the shape of the metal flags. The end of the monorail in the nitrating house. There were bins with hundreds of spools in them in the basement. A flooded assembly line.