The Atomic Cannon: Upshot-Knothole Grable
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
The May 25, 1952, Upshot-Knothole Grable event, aka Atomic Annie, proof tested a tactical nuclear weapon fashioned into a 280 mm cannon shell and fired from the Army’s M65 artillery piece. Travelling nearly seven miles downrange, Grable detonated with a force of fifteen kilotons 500 feet over a dry lake bed on the Nevada Test Site known as Frenchman Flat.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- 89233218CNA000001
- OSTI ID:
- 1635505
- Report Number(s):
- LA-UR--20-24674
- Country of Publication:
- United States
- Language:
- English
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