One Out in Aluminum Aluminum spools replaced their wooden counterparts, later in the factory’s history. Similar Images ...based on the tags: black&white, dirty, favorites, infinity, machinery, spools... The power pulley that ran air compressors straight off of the steam plant’s axel. On the second floor of the former casket plant, which was retrofitted with a conveyor system to coat finished products. These machines circulated water through the powder from the ball mills. Gold and silver is heavier than gravel, so it sinks while the junk rock floats. Old hospital beds. The chapel (left) and surgical suite (straight on) move in an out of view as fog rolls up from the St. Louis River valley. During the Cold War, the Air Force used the radar station to train bombardiers in radar-guided ordinance. The engine room. Where the approach meets the dock. A Merrill Piano from Boston, in the Recreation Room of the Front Dorm.