Operation Upshot-Knothole - Nuclear Test Film (1953)
Courtesy: U.S. Department of Energy 0800015 - Operation Upshot-Knothole - 1953 - 35:45 - Color- This operation conducted at the Nevada Test Site consisted of 11 atmospheric tests. There were three airdrops, seven tower tests, and one airburst. Conducted between March 17 and June 4, 1953, this operation involved the testing of new theories, using both fission and fusion devices. A new and revolutionary method of producing deliverable thermonuclear weapons was successfully tested. Approximately 21,000 Department of Defense military and civilian personnel participated in Operation Upshot-Knothole as part of the Desert Rock V exercise. Unfortunately, Operation Upshot-Knothole, particularly the HARRY test, drew a great deal of criticism as resultant fallout levels produced increased offsite radiation exposures. The tests comprising the 1953 Operation Upshot-Knothole were as follows: ANNIE, March 17, tower, weapons related, 16 kilotons (kt) NANCY, March 24, tower, weapons related, 24 kt RUTH, March 31, tower, weapons related, 200 tons DIXIE, April 6, airdrop, weapons related, 11 kt RAY, April 11, tower, weapons related, 200 tons BADGER, April 18, tower, weapons related, 23 kt SIMON, April 25, tower, weapons related, 43 kt ENCORE, May 8, airdrop, weapons effects, 27 kt HARRY, May 19, tower, weapons related, 32 kt GRABLE, May 25, fired from 280 mm gun, airburst, weapons related, 15 kt CLIMAX, June 4, airdrop, weapons related, 61 kt
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