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Operation Upshot-Knothole GRABLE, 1953

Operation Upshot-Knothole was a series of eleven nuclear test shots conducted in 1953 at the Nevada Test Sit. Detonation of the associated nuclear weapon occurred 19 seconds after its deployment at 8:30am PDT (1530 UTC) on May 25, 1953, in Area 5 of the Nevada Test Site. The codename Grable was chosen because the letter Grable is phonetic for G, as in "gun", since the warhead was a gun-type fission weapon. As a shell, or artillery-fired atomic projectile (AFAP), the device was the first of its kind. The test remains the only nuclear artillery shell ever actually fired in the U.S. nuclear weapons test program. Operation Upshot-Knothole was a series of eleven nuclear test shots conducted in 1953 at the Nevada Test Site. The test series was notable as containing the first two shots (both fizzles) by University of California Radiation Laboratory-Livermore (now Lawrence Livermore National Laboratory), and for testing out some of the thermonuclear components that would be used for the massive thermonuclear series of Operation Castle.

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Title:

Operation Upshot-Knothole GRABLE, 1953

Caption:

Operation Upshot-Knothole was a series of eleven nuclear test shots conducted in 1953 at the Nevada Test Sit. Detonation of the associated nuclear weapon occurred 19 seconds after its deployment at 8:30am PDT (1530 UTC) on May 25, 1953, in Area 5 of the Nevada Test Site. The codename Grable was chosen because the letter Grable is phonetic for G, as in "gun", since the warhead was a gun-type fission weapon. As a shell, or artillery-fired atomic projectile (AFAP), the device was the first of its kind. The test remains the only nuclear artillery shell ever actually fired in the U.S. nuclear weapons test program. Operation Upshot-Knothole was a series of eleven nuclear test shots conducted in 1953 at the Nevada Test Site. The test series was notable as containing the first two shots (both fizzles) by University of California Radiation Laboratory-Livermore (now Lawrence Livermore National Laboratory), and for testing out some of the thermonuclear components that would be used for the massive thermonuclear series of Operation Castle.

Credit:

Album / Science Source / NNSA/Nevada Field Office

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Image size:

3362 x 4200 px | 40.4 MB

Print size:

28.5 x 35.6 cm | 11.2 x 14.0 in (300 dpi)

Keywords:

1953 • 20 XX TWENTIETH CENTURY • 20TH CENTURY • 20TH • A-BOMB • AFAP • AMERICA • AMERICAN • ARMS • ARTILLERY-FIRED ATOMIC PROJECTILE • ATOM BOMB • ATOMIC BOMB RESEARCH • ATOMIC BOMB TEST • ATOMIC BOMB • ATOMIC DEVICE • ATOMIC RESEARCH • ATOMIC TESTING • ATOMIC WEAPON • BLAST • BLASTING • CANNON TEST • CANNON • CELEBRITY • CODENAME GRABLE • DETONATE • DETONATING • DETONATION • EVENT • EXPLODING • EXPLOSION • FAMOUS • GUN-TYPE FISSION WEAPON • HISTORIC • HISTORICAL • HISTORY • HUNDRED YEARS WAR • IMPORTANT • M65 ATOMIC CANNON • M65 • MAY 25 • MAY 25TH • NEVADA TEST SITE • NEVADA • NOTABLE • NTS • NUCLEAR ARTILLERY SHELL • NUCLEAR BOMB RESEARCH • NUCLEAR BOMB TEST • NUCLEAR BOMB • NUCLEAR DEVICE • NUCLEAR TESTING • NUCLEAR WEAPON • OPERATION UPSHOT-KNOTHOLE GRABLE • OPERATION UPSHOT-KNOTHOLE • RESEARCH & DEVELOPMENT • RESEARCH AND DEVELOPMENT • RESEARCH • SCIENCE • SIEGE • SITE • TECHNOLOGICAL • TECHNOLOGY • TWENTIETH CENTURY • UNITED STATES • UPSHOT-KNOTHOLE GRABLE • UPSHOT-KNOTHOLE • US • USA • WAR • WARFARE • WEAPON OF MASS DESTRUCTION • WEAPON • WEAPONARY • WEAPONRY • WEAPONS • WELL-KNOWN • WMD