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File:Halifax Explosion blast cloud restored.jpg

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Description
English: This photograph was purportedly taken 15-20 seconds after the explosion. The National Library and Archives Canada description estimates the distance from the explosion as approximately 2 kilometres (one and a quarter miles) and that it was taken at Bedford Basin, Halifax, Nova Scotia, Canada, looking south down Halifax Harbour. Photographer: unknown.

The height of the blast at its peak was measured at approximately 12,000 feet (3,657.6 metres) on a sextant by Captain W. M. A. Campbell of the Canadian merchant ship, SS Acadien, approximately 24.14 km (15 mi) from the harbour approaches. In Canada - from the David Millar Collection (NLAC). In the U.S. - National Archives and Records Administration (NARA) Reference #165-WW-158A-15. Original source: Underwood & Underwood. Print only - no negative available.

Reproduction service has been withdrawn in Canada (NLAC). In the U.S., reproductions are available from NARA.
Date Taken on 6 December 1917
Source
This image is available from Library and Archives Canada under the reproduction reference number PA-166585 and under the MIKAN ID number 3531262

This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing.

Library and Archives Canada does not allow free use of its copyrighted works. See Category:Images from Library and Archives Canada.

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Author Unknown authorUnknown author
Permission
(Reusing this file)
Public domain
This Canadian work is in the public domain in Canada because its copyright has expired due to one of the following:
1. it was subject to Crown copyright and was first published more than 50 years ago, or

it was not subject to Crown copyright, and

2. it is a photograph that was created prior to January 1, 1949, or
3. the creator died prior to January 1, 1972.
You must also include a United States public domain tag to indicate why this work is in the public domain in the United States.
 Note that this work might not be in the public domain in countries that do not apply the rule of the shorter term and have copyright terms longer than life of the author plus 50 years. In particular, Mexico is 100 years, Jamaica is 95 years, Colombia is 80 years, Guatemala and Samoa are 75 years, Switzerland and the United States are 70 years, and Venezuela is 60 years.

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Public domain
This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country.
Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:Halifax_Explosion_blast_cloud_restored.jpg
Public domain
This work is based on a work in the public domain. It has been digitally enhanced and/or modified. This derivative work has been (or is hereby) released into the public domain by its author, Photo.guy4god. This applies worldwide.

In some countries this may not be legally possible; if so:

Photo.guy4god grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.
Public domain This work has been released into the public domain by its author, Photo.guy4god at English Wikipedia. This applies worldwide.
In some countries this may not be legally possible; if so:
Photo.guy4god grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.
Other versions
Unrestored version

Original upload log

The original description page was here. All following user names refer to en.wikipedia.
  • 2009-01-20 03:45 Mike.lifeguard 1200×1905× (635850 bytes) hopefully smoother
  • 2007-03-22 14:00 Photo.guy4god 1200×1905× (477106 bytes) (View, from the Northwest Arm -- a distance of 2.1 kilometres, of the column of smoke raised by the Halifax Explosion. May be the only photograph of the blast itself. 6 Dec. 1917 / Halifax, N.S. (vicinity) — 1 item — 125 x 100 mm Source: Library and Archives Canada USE/)

An original unrestored version is available here (info)

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6 December 1917Gregorian

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Date/TimeThumbnailDimensionsUserComment
current03:36, 6 April 2013Thumbnail for version as of 03:36, 6 April 20131,200 × 1,905 (417 KB)WarBaCoNlast upload didn't seem to work, also colour profile issue fixed.
03:30, 6 April 2013Thumbnail for version as of 03:30, 6 April 20131,200 × 1,905 (403 KB)WarBaCoNrestore from scratch in attempt to recover some of the detail lost in previous versions.
05:00, 21 July 2012Thumbnail for version as of 05:00, 21 July 20121,200 × 1,905 (278 KB)1970gemini{{Information |Description ={{en|1=This may be the only photograph of the remnants of blast itself reportedly taken 15-20 seconds after the explosion. Indications are that it was taken Bedford Basin, Halifax, Nova Scotia, Canada, from approximately ...
21:11, 1 April 2009Thumbnail for version as of 21:11, 1 April 20091,200 × 1,905 (621 KB)File Upload Bot (Magnus Manske) {{BotMoveToCommons|en.wikipedia|year={{subst:CURRENTYEAR}}|month={{subst:CURRENTMONTHNAME}}|day={{subst:CURRENTDAY}}}} {{Information |Description={{en|(View, from a distance of thirteen miles, of the column of smoke raised by the Halifax Explosion. May b

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