Blast Door II One of the many blast doors. Note the plunger to seal off the airflow in the event of an attack or accidental explosion. Similar Images ...based on the tags: blast-doors, green, grimy, rusty, steel... 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. Looking across the whole milling operation from its dedicated powerhouse stretching across Eagle River. In the Lime House, the sunset picked-up the last light of day to make this image. Lime is used in the beet sugar refinement process to reduce the acidity of the beet juice mixture. This little curled yellow thing is one of the last hints that this adobe building was lived in. Part of the 1917 mill that had a little bit of roof left over it–most of this building was open to the sky. The birds loved it, but everything metal was quickly becoming too unstable to walk on. The control room for Manitoba Pool Elevator #3 was the most modern of any I saw in Thunder Bay. Apparently, 25 men were working on the day this elevator shut down. The generator room was state of the art when it was installed, allowing the complex to use motors and electric lighting ahead of its competitors. This might have been part of the Pioneer Pellet Plant. It looks to be a ball mill, which pulverizes ore by spinning it with thousands of ball bearings. A white star marks the landing between the Keeper’s Quarters (Second Floor) and the radiobeacon and furnace rooms (First Floor).