PLUMBBOB/JOHN - 07/19/57 - LAS VEGAS, NV -- The detonation of the rocket produced a large smoke ring. The flash was seen at distances in excess of 100 miles from the Nevada test Site.  The “John” shot was the eight full scale nuclear test of the current nuclear test series held by the AEC and Department of Defense.
National Nuclear Security Administration / Nevada Site Office
<table style="width:100%; border:3px solid #829fb0; background:#c0e2f5; padding:0;"><tbody><tr><td>This image is available from the <a href="https://en.wikipedia.org/wiki/National_Nuclear_Security_Administration" class="extiw" title="w:National Nuclear Security Administration">National Nuclear Security Administration</a> Nevada Site Office Photo Library under number <a rel="nofollow" class="external text" href="https://web.archive.org/web/http://www.nv.doe.gov/library/photos/photodetails.aspx?ID=439">PLU-57-062</a>.
<p><small style="line-height:1.4">This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required.</small>
</p>
</td></tr></tbody></table>