Nitrate-Cellulose Collector In the nitrating house. Similar Images ...based on the tags: arrows, black&white, chutes, dark, funnels, machinery, numbers, pipes, rusty, signs... A big sign marks where the elevated walkway is severed where Dock 2 used to meet Dock 3, now gone. Inside the main entrance to the depot. Through the ‘To Station’ door, you can see some of the news stands. Look at the floor! There is a cool old air compressor in the corner of the powerhouse. A siren near the main road. Is it an air raid siren? A closeup inside the mill’s power room. The power pulley that ran air compressors straight off of the steam plant’s axel. There were bins with hundreds of spools in them in the basement. A winding flue between the ovens for Furnace 6, capped with sketchy catwalks. This section of the production floor was constantly dripping. Someone had laid down giant plastic sheeting to attempt to protect the lower floors, but it hasn’t worked.