| Historical Source |
| O |
|
Open-Hearth Blast Furnace, U.S. Steel, c. 1952
|
Open-hearth blast furnace, U.S. Steel Company's South Works, c. 1952.
The Electronic Encyclopedia of Chicago © 2005 Chicago Historical Society.
The Encyclopedia of Chicago © 2004 The Newberry Library. All Rights Reserved. Portions are copyrighted by other institutions and individuals. Additional information on copyright and permissions.
The Encyclopedia of Chicago © 2004 The Newberry Library. All Rights Reserved. Portions are copyrighted by other institutions and individuals. Additional information on copyright and permissions.