Gas Pump Between the gauges for the power plant boilers and the steam pump flywheels. Similar Images ...based on the tags: gauges, numbers, pipes, pumps, rusty, signs, valves... A machine to cast copper billets. The tops of the coke stoves. This giant gear’s sole purpose was to turn the ship’s single rudder in all conditions. Winter skies over Allouez Bay. From a distance, it looks almost fragile. I believe this is the push car, meaning it would push the charge in the oven out the opposite side into the train car. A little sheet metal box somehow made it back home. Not ghosts. Slow-moving explorers’ shadows create a ghostly effect in the ‘Old Ward’–the second floor of the Service Building. Shadows of the rusty trestle and cold control towers on the Barker. Workers are preparing to swing over the sides of the boat to help secure her to the Minnesota Power dock. One of the many fireproof bridges connecting the factory sections, one way to prevent fires from spreading throughout the plant.