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U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More