I found a historical photo of this room showing 10-foot high machines with wires hanging by the mile from looms and schematic charts.
Similar Images
...based on the tags: brown, fans, numbers, pillars, sepia, signs, warped...
This might have been part of the Pioneer Pellet Plant. It looks to be a ball mill, which pulverizes ore by spinning it with thousands of ball bearings.
The neon lighthouse, seen from the top of one of the silos.
Beside the shaft building are two fans on skids, indicating they were used underground.
Isabella A (left) and B (right) were built in 1910 and 1913, respectively.
Watch your head, say the colors. This side of the plant is apparently still standing and is owned by the city.
To move air around the non air-conditioned buildings, may of which date to the 1920s and 1930s, fans were mounted above the high door frames.
Pillars painted red indicated firefighting supplies. Fire was a very common enemy of early rail facilities, and many roundhouses burned down because of a combination of dry wood, hot, fire-breathing machinery and countless oil-saturated surfaces.
This is one of the rooms near Shaft 1 that was converted to be a Dry Room, where workers would wash and change between shifts.
The roof of the elevator was partly lit naturally with six big skylights. The less electricity pumped into a grain elevator, the less chance of a grain dust explosion.