Floatation Stairs A side view of the floatation level. I found it interesting that there were little ladders and staircases in the mill to help workers get around–this place was not as shoddy as other mills I’ve seen. Related Similar Images ...based on the tags: machinery, pipes, pulleys, staircases... On my first visit to the roundhouse, the control booth was extant. This was not always the top of the elevator. Another ruined spiral staircase in the mill. 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. One of the three ovens where the powder would be heater to over 2000 degrees… hot enough to fuse iron, but not hot enough to liquify it. 2010. A skyway connecting two Which tube carried the beer? I hope it’s the big one! In the soft wood of the machine, an employee left their mark. The sound of water running in the distance. Inside the pilot copper concentrator.