Operation Quicksilver (1978)

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Quicksilver
Information
Country United States
Test site NTS Area 19, 20, Pahute Mesa; NTS, Areas 1-4, 6-10, Yucca Flat
Period 1978-1979
Number of tests 16
Test type underground shaft
Max. yield 140 kilotonnes of TNT (590 TJ)
Navigation
Previous test series Operation Cresset
Next test series Operation Tinderbox

Operation Quicksilver[1] was a series of 16 nuclear tests conducted by the United States in 1978-1979 at the Nevada Test Site. These tests followed the Operation Cresset series and preceded the Operation Tinderbox series.

United States' Quicksilver series tests and detonations
Name [note 1] Date time (UT) Local time zone [note 2][2] Location [note 3] Elevation + height [note 4] Delivery [note 5]
Purpose [note 6]
Device [note 7] Yield [note 8] Fallout [note 9] References Notes
Emmenthal 2 November 1978 15:25:00.169 PST (-8 hrs)
NTS Area U19t 37°17′16″N 116°17′54″W / 37.28789°N 116.29838°W / 37.28789; -116.29838 (Emmenthal) 2,104 m (6,903 ft) - 576.1 m (1,890 ft) underground shaft,
weapons development
2.5 kt [1][3][4]
Concentration 1 December 1978 17:07:30.073 PST (-8 hrs)
NTS Area U3kn 37°01′47″N 116°01′30″W / 37.02965°N 116.02488°W / 37.02965; -116.02488 (Concentration) 1,189 m (3,901 ft) - 247.59 m (812.3 ft) underground shaft,
weapons development
600 t [1][3][4][5][6]
Farm 16 December 1978 15:30:00.158 PST (-8 hrs)
NTS Area U20ab 37°16′24″N 116°24′40″W / 37.27334°N 116.41116°W / 37.27334; -116.41116 (Farm) 1,979 m (6,493 ft) - 689 m (2,260 ft) underground shaft,
weapons development
140 kt Venting detected [1][3][4][7]
Baccarat 24 January 1979 18:00:00.1 PST (-8 hrs)
NTS Area U7ax 37°06′19″N 116°00′45″W / 37.10536°N 116.01253°W / 37.10536; -116.01253 (Baccarat) 1,311 m (4,301 ft) - 326.44 m (1,071.0 ft) underground shaft,
weapons development
6 kt [1][3][4]
Quinella 8 February 1979 20:00:00.089 PST (-8 hrs)
NTS Area U4l 37°06′09″N 116°03′21″W / 37.10243°N 116.05571°W / 37.10243; -116.05571 (Quinella) 1,241 m (4,072 ft) - 579.1 m (1,900 ft) underground shaft,
weapons development
89 kt [1][3][4][5][8]
Kloster 15 February 1979 18:05:00.165 PST (-8 hrs)
NTS Area U2eo 37°09′07″N 116°04′22″W / 37.15196°N 116.07271°W / 37.15196; -116.07271 (Kloster) 1,297 m (4,255 ft) - 536.4 m (1,760 ft) underground shaft,
weapons development
20 kt Venting detected [1][3][4][7][8][9]
Memory 14 March 1979 18:30:00.095 PST (-8 hrs)
NTS Area U3kg 37°01′40″N 116°02′26″W / 37.02778°N 116.04062°W / 37.02778; -116.04062 (Memory) 1,190 m (3,900 ft) - 364.85 m (1,197.0 ft) underground shaft,
weapons development
5 kt [1][3][4]
Freezeout 11 May 1979 16:00:00.102 PST (-8 hrs)
NTS Area U3kw 36°59′53″N 116°01′06″W / 36.99818°N 116.01844°W / 36.99818; -116.01844 (Freezeout) 1,177 m (3,862 ft) - 335.3 m (1,100 ft) underground shaft,
weapons development
5 kt [1][3][4][5][6]
Pepato 11 June 1979 14:00:00.17 PST (-8 hrs)
NTS Area U20ad 37°17′23″N 116°27′22″W / 37.28963°N 116.45614°W / 37.28963; -116.45614 (Pepato) 1,913 m (6,276 ft) - 681 m (2,234 ft) underground shaft,
weapons development
100 kt I-131 venting detected, 0 [1][3][4][7][9]
Chess 20 June 1979 15:00:13.542 PST (-8 hrs)
NTS Area U7at 37°06′27″N 116°00′57″W / 37.10761°N 116.01585°W / 37.10761; -116.01585 (Chess) 1,309 m (4,295 ft) - 335.3 m (1,100 ft) underground shaft,
weapons development
1.5 kt [1][3][4]
Fajy 28 June 1979 14:44:00.167 PST (-8 hrs)
NTS Area U2fc 37°08′35″N 116°05′18″W / 37.14305°N 116.08847°W / 37.14305; -116.08847 (Fajy) 1,303 m (4,275 ft) - 536 m (1,759 ft) underground shaft,
weapons development
22 kt I-131 venting detected, 0 [1][3][4][7][8][9]
Burzet 3 August 1979 15:07:30.164 PST (-8 hrs)
NTS Area U4ai 37°05′02″N 116°04′15″W / 37.0839°N 116.07076°W / 37.0839; -116.07076 (Burzet) 1,235 m (4,052 ft) - 450 m (1,480 ft) underground shaft,
weapons development
20 kt Venting detected [1][3][4][7][8]
Offshore 8 August 1979 15:00:00.112 PST (-8 hrs)
NTS Area U3ks 37°00′53″N 116°00′32″W / 37.0147°N 116.00887°W / 37.0147; -116.00887 (Offshore) 1,182 m (3,878 ft) - 396.54 m (1,301.0 ft) underground shaft,
weapons development
20 kt [1][3][4][5][8]
Hearts 6 September 1979 15:00:00.089 PST (-8 hrs)
NTS Area U4n 37°05′17″N 116°03′13″W / 37.08806°N 116.05356°W / 37.08806; -116.05356 (Hearts) 1,232 m (4,042 ft) - 640.02 m (2,099.8 ft) underground shaft,
weapons development
140 kt [1][3][4][5][8] Destroyed Cresset/Transom device which didn't detonate.
Pera 8 September 1979 17:02:00.09 PST (-8 hrs)
NTS Area U10bd 37°09′18″N 116°02′21″W / 37.15495°N 116.03906°W / 37.15495; -116.03906 (Pera) 1,280 m (4,200 ft) - 200 m (660 ft) underground shaft,
weapons development
5 kt [1][3][4]
Sheepshead 26 September 1979 15:00:00.091 PST (-8 hrs)
NTS Area U19aa 37°13′46″N 116°21′53″W / 37.22935°N 116.36482°W / 37.22935; -116.36482 (Sheepshead) 2,033 m (6,670 ft) - 640 m (2,100 ft) underground shaft,
weapons development
140 kt [1][3][4]

References[edit]

  1. ^ a b c d e f g h i j k l m n o p q Yang, Xiaoping; North, Robert; Romney, Carl (August 2000), CMR Nuclear Explosion Database (Revision 3), SMDC Monitoring Research 
  2. ^ "Timezone Historical Database". iana.com. Retrieved March 8, 2014. 
  3. ^ a b c d e f g h i j k l m n o p Official list of underground nuclear explosions, Sandia National Laboratories, 1994-07-01, retrieved 2013-12-18 
  4. ^ a b c d e f g h i j k l m n o p United States Nuclear Tests: July 1945 through September 1992 (DOE/NV-209 REV15), Las Vegas, NV: Department of Energy, Nevada Operations Office, 2000-12-01, retrieved 2013-12-18 
  5. ^ a b c d e Operation Argus, 1958 (DNA6039F), Washington, DC: Defense Nuclear Agency, Department of Defense, retrieved 26 November 2013 
  6. ^ a b Norris, Robert Standish; Cochran, Thomas B. (1 February 1994), "United States nuclear tests, July 1945 to 31 December 1992 (NWD 94-1)", Nuclear Weapons Databook Working Paper (Washington, DC: Natural Resources Defense Council), retrieved 2013-10-26 
  7. ^ a b c d e Radiological Effluents Released from U.S. Continental Tests 1961 Through 1992 (DOE/NV-317 Rev. 1), DOE Nevada Operations Office, August 1996, retrieved 2013-10-31 
  8. ^ a b c d e f Hechanova, Anthony E.; O'Donnell, James E. (1998-09-25), Estimates of yield for nuclear tests impacting the groundwater at the Nevada Test Site, Nuclear Science and Technology Division 
  9. ^ a b c Estimated exposures and thyroid doses received by the American people from Iodine-131 in fallout following Nevada atmospheric nuclear bomb tests, Chapter 2, National Cancer Institute, 1997, retrieved 2014-01-05