Powerhouse The powerhouse had two elevated tracks behind it, one for coal and one for deliveries. Related Similar Images ...based on the tags: black&white, fences, windows... This is a great example of a combination rock house; the silos below used to fill trains with ore dropped from mine cars pulled to the top of the structure. David Aho pictured. When a big motor rusted free of its ceiling mount, it smashed onto this workbench. These aluminum powder kegs were forgotten in storage. The rocket system used several cooling methods, once of which included an evaporation pond, pictured here. Looking toward the famous Duluth Aerial Lift Bridge from Lake Superior. Shot on a the legendary Pentax 67. The top floor of the condemned Russell Miller mill “B”, which would have housed sets of powerful electric motors to power the plant’s dust collectors and grain purifiers. My guess is that the Capitol Hotel closed and Adler bought up some of their equipment. Looking from the powerhouse across to the old Electrical Assembly side of the plant that manufactured products like thermostats. Most of the complex is connected by skyway and tunnel systems.