Pittsburgh in Allegheny County, Pennsylvania — The American Northeast (Mid-Atlantic)
—Rivers of Steel National Heritage Area —
In 1922, the Duquesne Slag Products Company, a subsidiary of Jones & Laughlin, purchased 94 acres in the Nine Mile Run Area, now the site of the Summerset at Frick Park housing development, to dump its excess slag.
The slag heap grew to heights of 150 feet and up. By the 1970s approximately 17 million cubic yards of slag nearly filled the valley from end to end.
Erected by Friends of the Riverfront, DCNR, National Park Service.
Location. 40° 25.705′ N, 79° 57.797′ W. Marker is in Pittsburgh, Pennsylvania, in Allegheny County. Marker can be reached from the intersection of Three Rivers Heritage Trail and South 28th Street. Click for map. Located on the Three Rivers Heritage Trail on Pittsburgh's South Side, just northeast of the Hyatt Hotel. Marker is in this post office area: Pittsburgh PA 15203, United States of America.
Other nearby markers. At least 8 other markers are within one mile of this marker, measured as the crow flies. The MonCon Railroad (a few steps from this marker); Open Hearth Steel Hazelwood: A Rivertown Rich in History (approx. ¼ mile away); John T. Comès (approx. 0.7 miles away); Polish Army (approx. 0.9 miles away); Salk Polio Vaccine (approx. one mile away); Forbes Field (approx. 1.1 miles away); Barney Dreyfuss (approx. 1.1 miles away). Click for a list of all markers in Pittsburgh.
Categories. • Industry & Commerce •
Credits. This page originally submitted on , by Mike Wintermantel of Pittsburgh, Pennsylvania. This page has been viewed 104 times since then. Photos: 1, 2. submitted on , by Mike Wintermantel of Pittsburgh, Pennsylvania. This page was last revised on June 16, 2016.