Growing up, . . . to the limited extent to which poor little DonDiego
did grow up, . . . he could see those coke ovens from the upstairs window of his home.
Poor young DonDiego worked in the Blast Furnace Division of the Bethlehem Steel Plant to pay for his college.
Now pretty much the entire industrial complex is gone, 'cept for a few buildings and structures like the ore bridge 'cross from the Sands Bethlehem Casino:

The City Fathers was a'plannin to make a B-I-I-I-I-G industrial museum to attract visitors and such. So's they left some of the buildings and things-like-that-there a'standin' so's they could, . . . umm, . . . "repurpose" them to hold all them there museum exhibits.
But nobody could then, or can today, come up with the money, so everythings jes' a rustin' away:
Iron Foundry - Where DonDiego's Dad worked 40+ years

Blast Furnaces - Where young DonDiego worked Summers

The Bethlehem Steel (un-repurposed)