Historic American Buildings Survey/Historic American Engineering Record/Historic American Landscapes Survey
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link: "https://www.loc.gov/pictures/item/pa3341.photos.359326p/",
thumbnail:{
url :"https://cdn.loc.gov/service/pnp/habshaer/pa/pa3300/pa3341/photos/359326p_150px.jpg",
alt:'Image from Prints and Photographs Online Catalog -- The Library of Congress'
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3. LOOKING WEST INSIDE ELECTRIC FURNACE BUILDING ON CHARGING FLOOR. VIEW OF 7 1/2 TON CAPACITY ALLIANCE SIDE DOOR CHARGING MACHINE. - U.S. Steel Duquesne Works, Electric Furnace Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA
- Digital ID: (None) hhh pa3341.photos.359326p http://hdl.loc.gov/loc.pnp/hhh.pa3341/photos.359326p
- Reproduction Number: HAER PA,2-DUQU,3C--3
- Repository: Library of Congress Prints and Photographs Division Washington, D.C. 20540 USA http://hdl.loc.gov/loc.pnp/pp.print