New-ish commercial park along river. https://www.cmu.edu/news/stories/archives/2019/september/mill-19-grand-opening.html
That used to be J&L Steel Eliza Blast Furnace (6 of them) + Rolling Mill. Open Hearth furnace was on the other side of the Mon.
I used to work on the Eliza side Ingot Mold Foundry.