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.
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...based on the tags: carts, mine-shafts, rubber, rusty, tracks...
The west portal of the tunnel is open, and if it wasn’t for the rough track, I would think by looking at it that a train could be coasting up behind me any moment. Mamiya 6/Portra 160
These ceramic bricks were likely from the fireproof tunnel that connected the elevators.
Much of the plant depended on steam, not only for heat but for mechanical power.
Looking across the whole milling operation from its dedicated powerhouse stretching across Eagle River.
Standing next to the now-demolished records room.
A few of the stalls in the older section of the roundhouse, the noon sky peeking in.
These machines circulated water through the powder from the ball mills. Gold and silver is heavier than gravel, so it sinks while the junk rock floats.
Blue plastic siding filters the summer sun, giving the otherwise reddish-brown interior a splash of color.
The generator room was state of the art when it was installed, allowing the complex to use motors and electric lighting ahead of its competitors.