Club member Marc Gaudet has recently photographed at the Carrie Furnace in Pennsylvania. Steel production ended there in 1982 and the site is now a National Historic Landmark and apparently part of the Rivers of Steel National Heritage Area.
Marc’s photographic survey of a relic of the industrial age in the US can be found here. There is a photo gallery and an AV show (exe file). It is a strong body of work and I encourage you to take a look at it.
If you’re interested The Library of Congress also has a collection of photos of the site here, not sure if any of them date from when it was operational.
[As an aside if you wanted to make an inkjet print of any of these they have been scanned at reasonable resolution so you could download a TIFF file and do that. LOC photos are often not copyright restricted so you could, for example, download a high res 115MB TIFF of Dorothea Lange's original, unretouched, "Migrant Mother" image here and print - and sell - as many copies as you liked. Don't do that with Marc's pictures though...]