Photograph taken milliseconds after detonation of nuclear device from the "Tumbler-Snapper" test series. (The shot tower is faintly visible below fireball; downward spikes are termed "rope tricks").
|Test site||Nevada Test Site|
|Number of tests||8|
|Test type||Atmospheric tests|
|Max. yield||31 kt|
|Previous test||Operation Buster-Jangle|
|Next test||Operation Ivy|
Operation Tumbler-Snapper was a series of atomic tests conducted by the United States in early 1952 at the Nevada Test Site. The Tumbler-Snapper series of tests followed Operation Buster-Jangle, and preceded Operation Ivy.
The Tumbler phase, sponsored by the Atomic Energy Commission consisted of three airdrops which were intended to help explain discrepancies in the actual and estimated blast shock wave damage noted on previous detonations, and to establish more accurately the optimum height of burst.
The Snapper phase, sponsored by the Department of Defense consisted of one airdrop and four tower shots intended to test various new weapons developments.
The individual shots were:
|Name||Date Time (UT)||Location||Elevation + Height||Delivery||Purpose||Device||Yield||Notes|
|Able||1 April 1952 17:00:07.5||NTS Area 5,||940 metres (3,080 ft) + 240 metres (790 ft)||free airdrop||weapon effects||Mark 4 with U-235 core||1 kT|
|Baker||15 April 1952 17:29:57.1||NTS Area 7,||1,280 metres (4,200 ft) + 340 metres (1,120 ft)||free airdrop||weapon effects||Mark 4||1 kT|
|Charlie||22 April 1952 17:30:10.0||NTS Area 7,||1,280 metres (4,200 ft) + 1,050 metres (3,440 ft)||free airdrop||weapon development||Mark 4||31 kT||Live on TV; Desert Rock IV.|
|Dog||1 May 1952 16:29:59.1||NTS Area 7,||1,280 metres (4,200 ft) + 320 metres (1,050 ft)||free airdrop||weapon development||deuterium boosted TX-7;||19 kT||Desert Rock IV.|
|Easy||7 May 1952 12:14:59.3||NTS Area 1,||1,294 metres (4,245 ft) + 90 metres (300 ft)||tower||weapon development||Mark 12||12 kT||First use of beryllium as a tamper.|
|Fox||25 May 1952 11:59:59.6||NTS Area 4,||1,300 metres (4,300 ft) + 90 metres (300 ft)||tower||weapon development||Mark 5||11 kT||Desert Rock IV.|
|George||1 June 1952 11:54:59.8||NTS Area 3,||1,229 metres (4,032 ft) + 90 metres (300 ft)||tower||weapon development||Mark 5||15 kT||Tested external neutron initiator; Desert Rock IV.|
|How||5 June 1952 11:55:00.3||NTS Area 2,||1,370 metres (4,490 ft) + 90 metres (300 ft)||tower||weapon development||TX-12||14 kT|
|Wikimedia Commons has media related to Operation Tumbler-Snapper.|
- Griggs, D. T., and Frank Press (1961). ""Probing the earth with nuclear explosions"". Journal of Geophysical Research. 66(1): 237–258.
- United States Nuclear Tests: July 1945 through September 1992 (Revision 15). Department of Energy, Nevada Operations Office. December 2000. Retrieved 10/26/2013.
- Yang, Xiaoping, Robert North, and Carl Romney (August 2000). CMR Nuclear Explosion Database (Revision 3). SMDC Monitoring Research. Retrieved 10/26/2013.
- Hansen, Chuck (1995). The Swords of Armageddon, Vol. 8. Chukelea Publications (Sunnyvale, CA). ISBN 978-0-9791915-1-0.
- Operation TUMBLER SNAPPER Fact Sheet. Defense Threat Reduction Agency. Retrieved 10/26/2013.
- Robert Standish Norris and Thomas B. Cochran. United States Nuclear Tests July 1945 to 31 December 1992. NRDC NWD 94-1. Retrieved 12/11/2007.
- Local time (PST) is 8 hours less than UT (7 for PDT); local date is the day before UT if UT time is before 08:00 (07:00 PDT).
- Troops shown three miles from 'ground zero' of bomb
- The short film Nuclear Test Film - Operation Tumbler-Snapper (1952) is available for free download at the Internet Archive [more]
- The short film A-Bomb Blast Effects (1959) is available for free download at the Internet Archive [more]
- Video clip: Historic footage of troops observing airdrop "Dog" from Camp Desert Rock