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...
A panorama next to a long abandoned adit. The tram has seen better days.
In the Lime House, the sunset picked-up the last light of day to make this image. Lime is used in the beet sugar refinement process to reduce the acidity of the beet juice mixture.
The oldest part of this mill had a wooden roof that rotted away long ago. Slowly, rust is dulling the edge on every cog left behind.
Made by the Mergenthalen Linotype Company of New York, this model series (300) was introduced in 1960 and boasted a 12-line-per-minute reproduction rate.
Funny how sensitive modern English speakers have become to gendered language. I doubt the workers here–almost all female–were offended by this posting for ‘Workmen’s Compensation’.
Approaching the power station and its giant stack. The stack replaced four shorter stacks in the 1960s, helping with pollution in the downtown corridor.
Beside the shaft building are two fans on skids, indicating they were used underground.
One of the only extant assembly line tracks in the body painting department. No photographer leaves Fisher 21 without capturing some version of this spot; hope you like mine.
In case of fire, workers on higher floors would take the emergency slides to escape.