Rubber-Lined Cars Because the shaft is nearly vertical, rocks riding inside shift a lot. To keep them from breaking down the door and raining into the shaft. Similar Images ...based on the tags: carts, mine-shafts, rubber, rusty, tracks... Through a section of the tailings boom where mountain winds tore open the sheet metal around the conveyor, I poked my head out. I believe these hooks were meant for hanging filters to dry. A dead work truck rusts near an outbuilding. Everything is marked with a code. Modernity. This picture shows the challenges of moving around underground in the base. In the mine offices, hooks and a board with numbers was the system to keep track of who was in the mine and who was safe. Blue plastic siding filters the summer sun, giving the otherwise reddish-brown interior a splash of color. An emergency slide to help workers evacuate the blending house in an emergency. This big rusty sphere hides behind the incomplete 5-stack. Part of the grain drier system in ADM #1 crawls up the side of the building like a steel vine.