National Tube Works
Incorporated 1869, the works began production here, 1872. By 1901, when it became a subsidiary of U.S. Steel, this was the world's largest pipe producer. Major advances in inspection techniques originated here. Plant operations ceased in 1987.
David Rumsey Map Collection, Stanford LibrariesDavid Rumsey Map Collection, Stanford LibrariesDavid Rumsey Map Collection, Stanford LibrariesBarry Lawrence Ruderman Map Collection, Stanford LibrariesBarry Lawrence Ruderman Map Collection, Stanford Libraries
Marker data: Pennsylvania Historical and Museum Commission via data.pa.gov
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