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File:Wtc7-nist1a-fig3-15.jpg

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Wtc7-nist1a-fig3-15.jpg (412 × 281 pixels, file size: 34 KB, MIME type: image/jpeg)

Summary

Description
English: Downward velocity of north face roofline as WTC7 began to collapse
Date
Source http://wtc.nist.gov/NCSTAR1/PDF/NCSTAR%201A.pdf
Author National Institute of Standards and Technology
Permission
(Reusing this file)
Public domain
This image is in the public domain in the United States because it is a work of the United States Federal Government, specifically an employee of the National Institute of Standards and Technology, under the terms of Title 17, Chapter 1, Section 105 of the US Code.

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Licensing

Public domain
This image is in the public domain in the United States because it is a work of the United States Federal Government, specifically an employee of the National Institute of Standards and Technology, under the terms of Title 17, Chapter 1, Section 105 of the US Code.

العربية  English  日本語  македонски  Nederlands  +/−

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depicts

20 November 2008

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Date/TimeThumbnailDimensionsUserComment
current05:19, 23 April 2009Thumbnail for version as of 05:19, 23 April 2009412 × 281 (34 KB)Johninwiki{{Information |Description={{en|1=Downward velocity of north face roofline as WTC7 began to collapse}} |Source=http://wtc.nist.gov/NCSTAR1/PDF/NCSTAR%201A.pdf |Author=National Institute of Standards and Technology |Date=2008-11-20 |Permission={{PD-USGov-N

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