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File:Wtc7 collapse progression.png

Summary

Plan view of 7 World Trade Centre, damage and collapse progression.

Source: NIST, Interim report on 7 World Trade Centre, Appendix L

http://wtc.nist.gov/progress_report_june04/appendixl.pdf

Licensing

Public domain This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code. See Copyright.

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