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carnegie-steel-edgar-thomson-works

Andrew Carnegie's first steel mill, the Edgar Thomson Works in Braddock, Pennsylvania, near Pittsburg. Library of Congress / Detroit Publishing Co.

carnegie-steel-edgar-thomson-works

Andrew Carnegie's first steel mill, the Edgar Thomson Works in Braddock, Pennsylvania, near Pittsburg. Library of Congress / Detroit Publishing Co.
By Sam Holako
Published: February 24, 2021 Updated: