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U.S. Department of Energy
Office of Scientific and Technical Information

The Atomic Cannon: Upshot-Knothole Grable

Technical Report ·
DOI:https://doi.org/10.2172/1635505· OSTI ID:1635505
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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