Monorail Ramp Looking up to the second floor of the Nitrating House, where cotton would be soaked in nitric acid. These brought cotton into the building. Related Similar Images ...based on the tags: black&white, conveyors, lights, machinery, skyways, steel, windows... Wind-battered catwalk lights between the shaft house and headframe/rockhouse building. One of the early automated painting booths in the paint plant line. Looking up at the most conspicuous graffiti in the city on ADM #4. Steel mine hoists, near the place they worked, wait for scrap prices to justify their final removal from Osceola, Michigan. This is the crane that would be used to lower extra-heavy bits of copper ore into the fire of the furnace. A small bunker and blast wall between shell-loading buildings would have provided shelter during disasters, such as tornados, accidental explosions, and perhaps even enemy attacks. Worm in the path of raw ore where it would be dumped from rock cars into the silo below. In one of the small offices there’s this machine that bills itself as “The Recorder.” I’m an old tech geek and I still don’t know what this really does. A filter to separate the sliced beets from boiling water.