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...
Looking down the Gilman-Belden tram.
The secret sweet-yet-salty center of the nameless factoryscape. Home base, tuned to rule the AC and turn out Product X at record rates, I’m sure.
This movable chute came off its rails.
I wonder what this guy is thinking, walking through the complex.
Looking up the rock house.
Off the beaten path is this old LTV sign. Now it points to a ghost town and dead dock.
Installed in 1904 at the center of the plant, this is one of two batteries of boilers. Being in Oshkosh, heat was very important to keeping labor moving in the cold months.
Workers’ lockers, strewn across Main Street, yet still out of the way.
A one-of-a-kind installation in Armour’s otherwise gutted engine house.