Hopper Stopper Powdered coal would sit in these hoppers before they get mixed with water to make a slurry. Then the mixture is injected into the firebox and ignited to make a coal-powered flamethrower capable of boiling water very quickly. Related Similar Images ...based on the tags: funnels, lights, rusty, squares... Perhaps one side is firmer than the other? Where the tailings boom meets the mill. The winch that hauled the sea leg, a decide to unload grain from waiting boats and barges. These corner pilings served as bumpers… a little assurance against wind, ice, and new captains. Looking through perfectly clear water into an abandoned mine room. My guess is that it contained some pumps to keep the mine dry and equipment related to the elevators. Judging by the bed, this room was used by employees in its later years. The pipes in the boiler would be full of water, so the heat in the furnace. You can almost make out the concrete chute through the open window. Kodak Portra 160/Mamiya 6.