Part of Operation Upshot-Knothole, was a 15-kiloton test fired from a 280-mm cannon on May 25, 1953 at the Nevada Proving Grounds. 72 years ago the U.S. Army carried out its first and only nuclear ...
The nuclear cannon dubbed “Atomic Annie” fires a 280 millimeter nuclear artillery shell packing 15 kilotons of explosive force, in this breathtaking image from 1953’s Operation Upshot-Knothole in ...
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