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 ...
Add Yahoo as a preferred source to see more of our stories on Google. 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.
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