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The homes in the study were constructed in such a way as to minimize the thermal effects of Annie, with an eye towards determining if, in the absence of fire, the basement of the closer home — 3,500 feet (1,100 m) from the hypocenter — might shelter its occupants, while the second — at 7,500 feet (2,300 m) — could remain standing. [4]
Operation Upshot–Knothole was a series of eleven nuclear test shots conducted in 1953 at the Nevada Test Site. It followed Operation Ivy and preceded Operation Castle . Over 21,000 soldiers took part in the ground exercise Desert Rock V in conjunction with the Upshot-Knothole Grable shot. [ 1 ]
The M65 atomic cannon, often called Atomic Annie, [6]: 92 was an artillery piece built by the United States and capable of firing a nuclear device. It was developed in the early 1950s, at the beginning of the Cold War ; and fielded between April 1955 and December 1962, in West Germany , South Korea and on Okinawa .
Original file (Ogg multiplexed audio/video file, Theora/Vorbis, length 13 s, 1,920 × 1,080 pixels, 6.61 Mbps overall, file size: 10.13 MB) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
Upshot–Knothole Grable was a nuclear weapons test conducted by the United States as part of Operation Upshot–Knothole. Detonation of the nuclear weapon , a W9 warhead , occurred 19 seconds after its deployment at 8:30am PDT (1530 UTC ) on May 25, 1953, in Area 5 of the Nevada Test Site .
Aerial view of Camp Desert Rock. Desert Rock was the code name of a series of exercises conducted by the US military in conjunction with atmospheric nuclear tests.They were carried out at the Nevada Proving Grounds between 1951 and 1957.
In 1953, extensive above-ground nuclear weapons testing had occurred at the test site, as part of Operation Upshot–Knothole. Director Dick Powell died of cancer in January 1963. Pedro Armendáriz was diagnosed with kidney cancer in 1960, and committed suicide in 1963 after he learned his condition had become terminal.
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