Dock Wall Door The city constructed a wall in the early 2000s to discourage visitors. Note the staircase is cut off, too. Similar Images ...based on the tags: concrete, graffiti, shadows, snow, staircases, trestles... The engine room. Looking down the walkway that traces the bottom side of the ore dock. These rails used to connect to those inside the Santiago Tunnel. Now they dangle above tailings. These tubes would bring cement to the top of the plant for storage in the silos. This floor of the workhouse had corkscrew conveyors–big augers–in the floor to move material around. Most of the walls that were metal were missing, leaving the concrete structure and open doors. Cauterized wounds on the factory floor, where the middle of the newer mill opens up to allow massive equipment. Now the pipes are cut and the equipment is gone. I wonder when fluorescent lighting was added. As my friend Jonathan would say, “on a human scale.” Above the offices is this little section of factory that still has strips of wood flooring. This may be where the upholstery was cut.