Here is another from Bethlehem Steel.
The pipes seen here directly above where I was standing were used to bring air into the blast furnace. They are large enough that I would be able to stand inside of them with room to spare. Much of it has been cut away and removed.
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Coming back to AM3 after a long hiatus. I hope to be more active in the coming months.
NIKON D200
1/100 second
F/8.0
ISO 320
24 mm