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.
I never knew that all those elementary school balance bar exercises were for a very serious purpose: not falling to one’s death in the event they uncover lost Chicago history.
This bay would host boxcars as workers would fill them with the fruits of the factory.
I made this picture to give the reader a sense of the slope between the mine buildings and the base of the concentrator. The whole area was really steep, and sometimes required scrambling to get up and down the Picayune Gulch for short distances.
A gymnasium, if I recall. The last building before the road dead-ends.
Looking at the side of 4B from the roof of its car shed.
Though it’s a little unclear what control station controlled what function, these levers seemed to relate to some of the bigger equipment inside the dredge, such as the trommel.