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.

Steel Footprints

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

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370 results
Location Area Address
Foster Foundry --
Foundry --
Foundry --
Franklin Foundry PittsburghStrip District --
GA Jelly Foundry Co. PittsburghStrip District --
GC Nobbs Sheet Metal Works PittsburghStrip District --
General Coal Products Co. Neville Island --
Gibson & Riddle Co 181 Lacock Street Allegheny City, PA
Glassport Works, Pittsburgh Steel Co. Glassport --
Globe Plow Works --
Graff Tube Works PittsburghHerrs Island/Washington’s Landing --
Graff, Hugus, & Co. Foundry & Stove PittsburghNorth Side --
Graham Nut & Bolt --
Graham Nut Co. --
Grant’s Hill Works PittsburghDowntown --
H. H. Robertson Co. /Robison Steel --
H. H. Robertson Co., Ambridge Ambridge --
H.K. Porter Locomotive Works PittsburghLawrenceville --
Hainsworth Steel Co./Oliver & Snyder Steel Co./American Steel & Wire/US Steel PittsburghStrip District --
Hamilton & Co. PittsburghHazelwood --
Hamilton Standard West Homestead --
Hanlon-Gregory Galvinizing Co. PittsburghStrip District --
Harbison-Walker Refractories Company PittsburghHays --
Hegla Foundry PittsburghStrip District --
Henry Aiken Foundry/RD Nutall Foundry & Machine Shop PittsburghLawrenceville --
Heppenstall Forge & Knife Co. PittsburghLawrenceville --
Heyl & Patterson Inc. --{fp_address}
HL Dixon Co. Foundry & Machine Shop Carnegie --
HM Myers & Co, Ltd. --
Hollow Ware Foundry PittsburghNorth Side --