Trommel The first step of the filtering process is being spun through this tube. Related Similar Images ...based on the tags: cables, circles, dirty, machinery, pipes, rusty, staircases, trommels, tubes... The turbine hall, without turbines. I guess that makes this a hall… at least it has a clock. A closeup of the now-scrapped steel chute. Looking into one of the fire slides, designed to evacuate patients extremely quickly. In 1880, a fire completely destroyed the asylum at St. Peter, Minnesota, killing 30 patients. The skylights with geared-to-open windows were massive and quite functional. The world’s biggest paper machine was installed here about a century before this photo was taken. The orange in the windows is the brick building across the street–the new part of the plant. The spiral staircase ends in the basement, where two oil tanks (for the lantern) and a freshwater tank (for the Keeper) were stored. The basement consists of two long arched vaults like this. A wimpy crane by most standards, only suitable for moving around parts of steam turbines. Taken from the most forward part of the windlass room to show how the front of the ship opens up from the front wedge. Note the giant anchor chains and foam strapped to the frontmost beam. The elevator works on gravity… this is where a conveyor belt was to move the grain toward the main elevator to be loaded into ships.