File:PrairieFlat500tonDetonation.jpg

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Summary[edit]

Description Operation Prairie Flat was a test on August 9, 1968 at the Defence Research Establishment Suffield, Alberta involving the detonation of a 500-short-ton (454 t) spherical surface charge of TNT to evaluate effects of nuclear weapons.

Author or
copyright owner Defence Research and Development Canada (DRDC)

Source (WP:NFCC#4)

Original publication: DRDC Article "DRDC’s experimental proving ground supports CAF, allied readiness"

Immediate source: Article: http://www.drdc-rddc.gc.ca/en/dynamic-article.page?doc=drdc-s-experimental-proving-ground-supports-caf-allied-readiness/i6mizy83 Image Link: www.drdc-rddc.gc.ca/assets/DRDC_Internet/images/news/2015/EPG/epg-related-3-pr512-15_s.jpg

Use in article (WP:NFCC#7) Operation Prairie Flat

Purpose of use in article (WP:NFCC#8) To illustrate the article with a rare historic image of Operation Prairie Flat.

Not replaceable with
free media because (WP:NFCC#1) Not possible due to fact it was a unique large explosives test in 1968. Very few images exist of Operation Prairie Flat, in fact the only two others are found at the same source.

Minimal use (WP:NFCC#3) Single use of image in one article

Respect for
commercial opportunities (WP:NFCC#2) Does not appear to be used anywhere else, the original article was an informational government article. Also satisfies the terms here linked from the article [1]

Other information

This work is protected by Canadian Crown copyright. Limitations on its distribution are defined at the original site of publication, and are not altered by its reproduction here. Those terms may include, but may not be limited to, its reproduction being accurate, free of charge in any format or medium, and not used in a misleading context. The source of the material must be identified and the copyright status acknowledged.

Thus, this is a non-free license for the purpose of Wikipedia, as modification is not permitted. However, it is believed that the use of this work:

To illustrate the object in question
Where no free equivalent is available or could be created that would adequately give the same information
On the English-language Wikipedia, hosted on servers in the United States by the non-profit Wikimedia Foundation,

qualifies as fair use under United States copyright law. Any other uses of this image, on Wikipedia or elsewhere, may be copyright infringement. See Wikipedia:Non-free content and Wikipedia:Copyrights.
Fair use

To the uploader:

Please add a detailed non-free use rationale for each article the image is used in, which must also declare compliance with the other parts of the non-free content criteria, as well as the source of the work and copyright information.
For example non-free use rationales, see Wikipedia:Use rationale examples.
This tag should only be used for media with a Canadian Crown copyright . Do not use it for media with other status

To patrollers and administrators: If this image has an appropriate rationale please append |image has rationale=yes as a parameter to the license template.

Fair useFair use of copyrighted material in the context of Operation Prairie Flat//en.wikipedia.org/wiki/File:PrairieFlat500tonDetonation.jpgtrue

Licensing[edit]

This image is a faithful digitisation of a unique historic image, and the copyright for it is most likely held by the person who created the image or the agency employing the person. It is believed that the use of this image may qualify as non-free use under the Copyright law of the United States. Any other uses of this image, on Wikipedia or elsewhere, may be copyright infringement. See Wikipedia:Non-free content for more information.

Please remember that the non-free content criteria require that non-free images on Wikipedia must not "[be] used in a manner that is likely to replace the original market role of the original copyrighted media." Use of historic images from press agencies must only be of a transformative nature, when the image itself is the subject of commentary rather than the event it depicts (which is the original market role, and is not allowed per policy). Fair use

To the uploader:

Please add a detailed non-free use rationale for each article the image is used in, which must also declare compliance with the other parts of the non-free content criteria, as well as the source of the work and copyright information.
For example non-free use rationales, see Wikipedia:Use rationale examples.
Template:Non-free use rationale 2 may be helpful for stating the rationale.

To patrollers and administrators: If this image has an appropriate rationale please append |image has rationale=yes as a parameter to the license template.

If this tag does not accurately describe this image, please replace it with an appropriate one.

File history

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	06:01, 30 May 2017		316 × 315 (23 KB)	DatBot (talk \| contribs)	Reduce size of non-free image (BOT - disable)
	16:35, 23 May 2017	No thumbnail	1,200 × 1,200 (362 KB)	Crazytrain411 (talk \| contribs)	Uploading a non-free file using File Upload Wizard

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File usage

The following pages on the English Wikipedia use this file (pages on other projects are not listed):

Operation Prairie Flat

Metadata

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height	315
width	316
Orientation	Normal
Horizontal resolution	72 dpi
Vertical resolution	72 dpi
Software used	ViewNX 2.9 W
File change date and time	18:54, 18 March 2015
Y and C positioning	Centered
Exif version	2.3
Meaning of each component	Y Cb Cr does not exist
Supported Flashpix version	1
Color space	Uncalibrated