This virtual exhibit shows the intense concentration of both large and small mills that once dominated the landscape of southwestern PA. Search the map to find the locations of mills, coke ovens, and foundries as they stood in different points in history. Click on a mill icon to learn more about that site.

Show Mills by Era

Steel Footprints

A Virtual Tour of the Pittsburgh Industrial District, 1750 – Present

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347 results
Location Area Address
3rd Avenue Foundry PittsburghDowntown --
A.J. Nellis & Co. Irons and Steels PittsburghNorth Side --
Allegheny Foundry Co. PittsburghNorth Side --
Allegheny Iron Works PittsburghNorth Side --
Allegheny Ludlum, Brackenridge Brackenridge 100 River Road Brackenridge, PA 15014-1597
Allegheny Ludlum, West Leechburg West Leechburg --
Alliance Iron Works --
Allis-Chalmers Mfg. PittsburghNorth Side --
AM Byers & Co PittsburghSouth Side --
AM Byers, Ambridge Ambridge --
Ambridge Plant, American Bridge Co. Ambridge --
American Axe & Tool Co. Glassport --
American Die & Forge Co. Rankin --
American Foundry & Construction Co. PittsburghHazelwood --
American Nut & Bolt Fastener Co. PittsburghNorth Side --
American Shear Knife Company --{fp_address}
American Steel & Wire Co. --
American Steel & Wire Co. PittsburghNorth Side --
American Steel Band Co. PittsburghNorth Side --
American Steel Foundries PittsburghLawrenceville --
Anderson & Potter Near Mazeroski Way and W. General Robinson Allegheny City, PA
Apollo Steel Co. Apollo --
Atlas Foundry & Machine Works PittsburghStrip District --
Baeuerlein Bros. & Co. Foundry Millvale --
Baird Machine Co. PittsburghStrip District --
Banson Boiler Works PittsburghDowntown --
Barrett Machine Co. PittsburghNorth Side --
Barrett Mfg. Co. --
Berlin Foundry PittsburghHill District/Uptown --
Birmingham Coal Co. --