Panel Overload The control room was used through the mid-1990s as the plant was used to stabilize the power grid. Related Similar Images ...based on the tags: control-panels, control-rooms, green, left-behind, lights, panoramas, peeling-paint... One of the many blast doors. Note the plunger to seal off the airflow in the event of an attack or accidental explosion. Records of ore samples, mostly ruined by the water flowing into the space. In a now-demolished building, a skylight begins to separate. The back wall of the ballroom, showing water-warped floors. 2016. A section of the third floor that has changed a lot over the years. Compare to 2006 shot. The basement held a makeshift chapel. 1950s safety posters about static and proper footware hide in remote offices, where the curious haven’t stolen them… yet. The ballroom is fantastic, and it overlooks the historic Rose Garden and Lake Superior! The lime room was in rough shape, but its colors and textures were like raw gold and oxidized copper.