Not available in electronic form.
Please contact us by email at
email@example.com, or call (301)975-6478 for information
on the availability of this image.
||WTC Steel Stress Test
||High-speed video (30,000 frames per second) of a 4-millimeter-square sample of WTC steel being impact tested by NIST's Kolsky Bar apparatus to determine the steel's response to stress similar to the impact of an aircraft.
*MSEL, WTC, 9/11, Sept. 11
See also http://www.nist.gov/public_affairs/gallery/kolsky.htm.
Homeland Security--World Trade Center
||National Institute of Standards and Technology
|Credit Line as it should
appear in print: