Subterranean Rod Mill One of the machines left over in the underground magnetic separation plant. Similar Images ...based on the tags: cables, light-painted, machinery, mills, pillars, rusty, water... Cobbled walkways followed the assembly lines. Without a roof, the bricks were being washed away in the later years of the roundhouse. Behind the evaporators are heavy access hatches to inspect the steam pipes within. A panoramic view of the Ambassador Bridge, Detroit River and downtown from the roof of the 1925 warehouse. Ready to move to Detroit? One of the many fireproof bridges connecting the factory sections, one way to prevent fires from spreading throughout the plant. Counter-weighted ore cars alternately filled and emptied to feed Furnace 7. Honestly, though, the corner-mounted cranes are sexier in my opinion. Note the trees growing from the stacks. The buildings were level with one another, so one could look through as many as a dozen factory floors from one window. The rust garden’s brick centerpiece contrasts the muted winter Kentucky palette. Light-painted to show off the beautiful radar equipment inside and Park Point across the bay.