Seymour Bortz using a hydraulic press, Armour Research Foundation, Illinois Institute of Technology, Chicago, ca. 1950s Concrete--Testing Bortz, Seymour A., 1922- Armour Research Foundation (U.S.) Hydraulic presses Strain gages From the attached caption: "Seymour A. Bortz, structural engineer in the ceramics and minerals research department at Armour Research Foundation of Illinois Institute of Technology, investigates the flexural strength of a concrete specimen by means of electric strain gages and a hydraulic press." Photographer unknown. Date of photograph is unknown. Date range listed is approximate. 1953-1959 Still image Black and white photograph image/tiff islandora:1004678 0360401-I3-10-009 http://hdl.handle.net/10560/islandora:1004678 Office of Communications and Marketing photographs, 1905-1999 Illinois Tech Libraries Illinois Institute of Technology en Chicago (Ill.) In Copyright http://rightsstatements.org/vocab/InC/1.0/