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U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Edgar Thomson Works, Blast Furnace Plant, Along Monongahela...

Survey number: HAER PA-384-A Building/structure dates: 1898 Initial Construction Building/structure dates: 1916 Subsequent Work Building/structure dates: 1927 Subsequent Work Building/structure dates: 1941-... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Edgar Thomson Works, Blast Furnace Plant, Along Monongahela...

Survey number: HAER PA-384-A Building/structure dates: 1898 Initial Construction Building/structure dates: 1916 Subsequent Work Building/structure dates: 1927 Subsequent Work Building/structure dates: 1941-... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Edgar Thomson Works, Blast Furnace Plant, Along Monongahela...

Survey number: HAER PA-384-A Building/structure dates: 1898 Initial Construction Building/structure dates: 1916 Subsequent Work Building/structure dates: 1927 Subsequent Work Building/structure dates: 1941-... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Edgar Thomson Works, Blast Furnace Plant, Along Monongahela...

Survey number: HAER PA-384-A Building/structure dates: 1898 Initial Construction Building/structure dates: 1916 Subsequent Work Building/structure dates: 1927 Subsequent Work Building/structure dates: 1941-... More

U.S. Steel Edgar Thomson Works, Blast Furnace Plant, Along Monongahela...

Survey number: HAER PA-384-A Building/structure dates: 1898 Initial Construction Building/structure dates: 1916 Subsequent Work Building/structure dates: 1927 Subsequent Work Building/structure dates: 1941-... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Edgar Thomson Works, Blast Furnace Plant, Along Monongahela...

Survey number: HAER PA-384-A Building/structure dates: 1898 Initial Construction Building/structure dates: 1916 Subsequent Work Building/structure dates: 1927 Subsequent Work Building/structure dates: 1941-... More

U.S. Steel Edgar Thomson Works, Blast Furnace Plant, Along Monongahela...

Survey number: HAER PA-384-A Building/structure dates: 1898 Initial Construction Building/structure dates: 1916 Subsequent Work Building/structure dates: 1927 Subsequent Work Building/structure dates: 1941-... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Edgar Thomson Works, Blast Furnace Plant, Along Monongahela...

Survey number: HAER PA-384-A Building/structure dates: 1898 Initial Construction Building/structure dates: 1916 Subsequent Work Building/structure dates: 1927 Subsequent Work Building/structure dates: 1941-... More

U.S. Steel Edgar Thomson Works, Blast Furnace Plant, Along Monongahela...

Survey number: HAER PA-384-A Building/structure dates: 1898 Initial Construction Building/structure dates: 1916 Subsequent Work Building/structure dates: 1927 Subsequent Work Building/structure dates: 1941-... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Edgar Thomson Works, Blast Furnace Plant, Along Monongahela...

Survey number: HAER PA-384-A Building/structure dates: 1898 Initial Construction Building/structure dates: 1916 Subsequent Work Building/structure dates: 1927 Subsequent Work Building/structure dates: 1941-... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Edgar Thomson Works, Blast Furnace Plant, Along Monongahela...

Survey number: HAER PA-384-A Building/structure dates: 1898 Initial Construction Building/structure dates: 1916 Subsequent Work Building/structure dates: 1927 Subsequent Work Building/structure dates: 1941-... More

U.S. Steel Edgar Thomson Works, Blast Furnace Plant, Along Monongahela...

Survey number: HAER PA-384-A Building/structure dates: 1898 Initial Construction Building/structure dates: 1916 Subsequent Work Building/structure dates: 1927 Subsequent Work Building/structure dates: 1941-... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Edgar Thomson Works, Blast Furnace Plant, Along Monongahela...

Survey number: HAER PA-384-A Building/structure dates: 1898 Initial Construction Building/structure dates: 1916 Subsequent Work Building/structure dates: 1927 Subsequent Work Building/structure dates: 1941-... More

U.S. Steel Edgar Thomson Works, Blast Furnace Plant, Along Monongahela...

Survey number: HAER PA-384-A Building/structure dates: 1898 Initial Construction Building/structure dates: 1916 Subsequent Work Building/structure dates: 1927 Subsequent Work Building/structure dates: 1941-... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Edgar Thomson Works, Blast Furnace Plant, Along Monongahela...

Survey number: HAER PA-384-A Building/structure dates: 1898 Initial Construction Building/structure dates: 1916 Subsequent Work Building/structure dates: 1927 Subsequent Work Building/structure dates: 1941-... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...

See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More

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