||U. S. Steel - 52-inch Structural Mill
||A giant steel girder for a modern skyscraper takes shape in the stands of the 52-inch wide flange structural mill. Sign at left says "Learn safety on purpose not by accident."
||1792; http://www.pullman-museum.org/cgi-bin/pvm/mainRecordDisplayXML.pl?recordid=10688; 81-43-3-p14
||The Industrial Heritage Archives provides reproductions of items from its collections for personal or research use. If an image is to be reproduced in any type of publication or on the web, written permission is required and use fees may be assessed.
||Southeast Chicago Historical Society