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 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 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 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 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 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 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 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