Blast furnaces. Berkshire Iron Company's Sheridan Furnaces, Sheridan Station, Lebanon County, Pennsylvania, USA. The oldest was built in 1862, with co

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Blast furnaces. Berkshire Iron Company's Sheridan Furnaces, Sheridan Station, Lebanon County, Pennsylvania, USA. The oldest was built in 1862, with conversion to anthracite (a form of coal) in 1867, plus later rebuilding. The cone-shaped ore roasters (far left) remove sulphur from iron ore. Dating from around the 1890s, this photograph is from the Albert T. Keller collection of the American Iron and Steel Institute. The collection consists of historical photographs of blast furnaces used in the iron and steel industry. A blast furnace is where iron ore is heated to high temperatures in the presence of oxygen, with the carbon content controlled to produce types of steel (an alloy of iron and carbon).

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Size: 3898px × 2807px
Photo credit: © HAGLEY MUSEUM AND ARCHIVE/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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