Republic Iron & Steel Company, Youngstown Works, Blooming Mill & Bloom...
Significance: The Republic Iron and Steel Company installed a United-Tod twin-tandem compound steam engine and a Mesta-Corliss cross-compound steam engine in its blooming mill building at its Youngstown Works t... More
Republic Iron & Steel Company, Youngstown Works, Blooming Mill & Bloom...
Significance: The Republic Iron and Steel Company installed a United-Tod twin-tandem compound steam engine and a Mesta-Corliss cross-compound steam engine in its blooming mill building at its Youngstown Works t... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Republic Iron & Steel Company, Youngstown Works, Blooming Mill & Bloom...
Significance: The Republic Iron and Steel Company installed a United-Tod twin-tandem compound steam engine and a Mesta-Corliss cross-compound steam engine in its blooming mill building at its Youngstown Works t... More
Bethlehem Steel Corporation, South Bethlehem Works, Tool Steel-Electri...
Survey number: HAER PA-386-F Building/structure dates: ca. 1930 Initial Construction
Bethlehem Steel Corporation, South Bethlehem Works, Tool Steel-Electri...
Survey number: HAER PA-386-F Building/structure dates: ca. 1930 Initial Construction
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Republic Iron & Steel Company, Youngstown Works, Haselton Blast Furnac...
Significance: Soon after its founding in 1899, the Republic Iron and Steel Company acquired the existing Haselton blast furnace and subsequently built four blast furnaces. These blast furnaces produced pig ir... More
Bethlehem Steel Corporation, South Bethlehem Works, Blast Furnace "A",...
Survey number: HAER PA-386-D Building/structure dates: 1908 Initial Construction
Republic Iron & Steel Company, Youngstown Works, Blooming Mill & Bloom...
Significance: The Republic Iron and Steel Company installed a United-Tod twin-tandem compound steam engine and a Mesta-Corliss cross-compound steam engine in its blooming mill building at its Youngstown Works t... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Scottdale Iron & Steel Works, Uptegraff Drive, Scottdale, Westmoreland...
Significance: One of the earliest steel and iron works in Westmoreland County, the company produced iron and steel sheets and became a subsidiary of U.S. Steel in the early 20th century. Reborn as an electrica... More
Republic Iron & Steel Company, Youngstown Works, Blooming Mill & Bloom...
Significance: The Republic Iron and Steel Company installed a United-Tod twin-tandem compound steam engine and a Mesta-Corliss cross-compound steam engine in its blooming mill building at its Youngstown Works t... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Bethlehem Steel Corporation, South Bethlehem Works, Along Lehigh River...
Significance: Formed in 1857 as the Saconna Iron Company, this steel works along the Lehigh River was reorganized the following year as the Bethlehem Rolling Mill and Iron Company. Under the direction of Robert... More
Republic Iron & Steel Company, Youngstown Works, Blooming Mill & Bloom...
Significance: The Republic Iron and Steel Company installed a United-Tod twin-tandem compound steam engine and a Mesta-Corliss cross-compound steam engine in its blooming mill building at its Youngstown Works t... More
Bethlehem Steel Corporation, South Bethlehem Works, Tool Steel-Electri...
Survey number: HAER PA-386-F Building/structure dates: ca. 1930 Initial Construction
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Bethlehem Steel Corporation, South Bethlehem Works, Along Lehigh River...
Significance: Formed in 1857 as the Saconna Iron Company, this steel works along the Lehigh River was reorganized the following year as the Bethlehem Rolling Mill and Iron Company. Under the direction of Robert... More
Bethlehem Steel Corporation, South Bethlehem Works, Crucible Steel Pla...
Survey number: HAER PA-386-C Building/structure dates: ca. 1870 Initial Construction
Republic Iron & Steel Company, Youngstown Works, Blooming Mill & Bloom...
Significance: The Republic Iron and Steel Company installed a United-Tod twin-tandem compound steam engine and a Mesta-Corliss cross-compound steam engine in its blooming mill building at its Youngstown Works t... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Bethlehem Steel Corporation, South Bethlehem Works, Blast Furnace "A",...
Survey number: HAER PA-386-D Building/structure dates: 1908 Initial Construction
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Republic Iron & Steel Company, Youngstown Works, Blooming Mill & Bloom...
Significance: The Republic Iron and Steel Company installed a United-Tod twin-tandem compound steam engine and a Mesta-Corliss cross-compound steam engine in its blooming mill building at its Youngstown Works t... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Bethlehem Steel Corporation, South Bethlehem Works, Rolling Mill, Alon...
Survey number: HAER PA-386-B Building/structure dates: ca. 1862 Initial Construction
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Bethlehem Steel Corporation, South Bethlehem Works, Along Lehigh River...
Significance: Formed in 1857 as the Saconna Iron Company, this steel works along the Lehigh River was reorganized the following year as the Bethlehem Rolling Mill and Iron Company. Under the direction of Robert... More
Bethlehem Steel Corporation, South Bethlehem Works, Rolling Mill, Alon...
Survey number: HAER PA-386-B Building/structure dates: ca. 1862 Initial Construction
Republic Iron & Steel Company, Youngstown Works, Blooming Mill & Bloom...
Significance: The Republic Iron and Steel Company installed a United-Tod twin-tandem compound steam engine and a Mesta-Corliss cross-compound steam engine in its blooming mill building at its Youngstown Works t... More
Republic Iron & Steel Company, Youngstown Works, Blooming Mill & Bloom...
Significance: The Republic Iron and Steel Company installed a United-Tod twin-tandem compound steam engine and a Mesta-Corliss cross-compound steam engine in its blooming mill building at its Youngstown Works t... More
Bethlehem Steel Corporation, South Bethlehem Works, Tool Steel-Electri...
Survey number: HAER PA-386-F Building/structure dates: ca. 1930 Initial Construction
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Bethlehem Steel Corporation, South Bethlehem Works, Blast Furnace "A",...
Survey number: HAER PA-386-D Building/structure dates: 1908 Initial Construction
Bethlehem Steel Corporation, South Bethlehem Works, Rolling Mill, Alon...
Survey number: HAER PA-386-B Building/structure dates: ca. 1862 Initial Construction
Republic Iron & Steel Company, Youngstown Works, Blooming Mill & Bloom...
Significance: The Republic Iron and Steel Company installed a United-Tod twin-tandem compound steam engine and a Mesta-Corliss cross-compound steam engine in its blooming mill building at its Youngstown Works t... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Bethlehem Steel Corporation, South Bethlehem Works, Open Hearth No. 3,...
Survey number: HAER PA-386-E Building/structure dates: ca. 1920 Initial Construction
Bethlehem Steel Corporation, South Bethlehem Works, Along Lehigh River...
Significance: Formed in 1857 as the Saconna Iron Company, this steel works along the Lehigh River was reorganized the following year as the Bethlehem Rolling Mill and Iron Company. Under the direction of Robert... More
Bethlehem Steel Corporation, South Bethlehem Works, Crucible Steel Pla...
Survey number: HAER PA-386-C Building/structure dates: ca. 1870 Initial Construction
Bethlehem Steel Corporation, South Bethlehem Works, Rolling Mill, Alon...
Survey number: HAER PA-386-B Building/structure dates: ca. 1862 Initial Construction
Republic Iron & Steel Company, Youngstown Works, Blooming Mill & Bloom...
Significance: The Republic Iron and Steel Company installed a United-Tod twin-tandem compound steam engine and a Mesta-Corliss cross-compound steam engine in its blooming mill building at its Youngstown Works t... More
Bethlehem Steel Corporation, South Bethlehem Works, Tool Steel-Electri...
Survey number: HAER PA-386-F Building/structure dates: ca. 1930 Initial Construction
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Republic Iron & Steel Company, Youngstown Works, Blooming Mill & Bloom...
Significance: The Republic Iron and Steel Company installed a United-Tod twin-tandem compound steam engine and a Mesta-Corliss cross-compound steam engine in its blooming mill building at its Youngstown Works t... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Bethlehem Steel Corporation, South Bethlehem Works, Rolling Mill, Alon...
Survey number: HAER PA-386-B Building/structure dates: ca. 1862 Initial Construction
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Bethlehem Steel Corporation, South Bethlehem Works, Along Lehigh River...
Significance: Formed in 1857 as the Saconna Iron Company, this steel works along the Lehigh River was reorganized the following year as the Bethlehem Rolling Mill and Iron Company. Under the direction of Robert... More
Republic Iron & Steel Company, Youngstown Works, Blooming Mill & Bloom...
Significance: The Republic Iron and Steel Company installed a United-Tod twin-tandem compound steam engine and a Mesta-Corliss cross-compound steam engine in its blooming mill building at its Youngstown Works t... More
Bethlehem Steel Corporation, South Bethlehem Works, Rolling Mill, Alon...
Survey number: HAER PA-386-B Building/structure dates: ca. 1862 Initial Construction
Republic Iron & Steel Company, Youngstown Works, Blooming Mill & Bloom...
Significance: The Republic Iron and Steel Company installed a United-Tod twin-tandem compound steam engine and a Mesta-Corliss cross-compound steam engine in its blooming mill building at its Youngstown Works t... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Republic Iron & Steel Company, Youngstown Works, Blooming Mill & Bloom...
Significance: The Republic Iron and Steel Company installed a United-Tod twin-tandem compound steam engine and a Mesta-Corliss cross-compound steam engine in its blooming mill building at its Youngstown Works t... More