Operation Flintlock (nuclear test) facts for kids

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Quick facts for kids Operation Flintlock
Information
Country	United States
Period	1965–1966
Number of tests	47
Test type	underground shaft, tunnel
Max. yield	365 kilotonnes of TNT (1,530 TJ)

Flintlock Long Shot, on Amchitka Island in the Alaskan Aleutian Islands

The United States's Flintlock nuclear test series was a group of 47 nuclear tests conducted in 1965–1966. These tests followed the Operation Whetstone series and preceded the Operation Latchkey series.

United States' Flintlock series tests and detonations
Name	Date time (UT)	Local time zone	Location	Elevation + height	Delivery Purpose	Yield	Fallout	Notes
Izzer	July 16, 1965 13:04:24.1	PST (–8 hrs)	NTS Area U9bp 37°06′54″N 116°01′59″W / 37.11495°N 116.03304°W / 37.11495; -116.03304 (Izzer)	1,273 m (4,177 ft) – 163.68 m (537.0 ft)	underground shaft, weapons development	less than 20 kt	Venting detected
Pongee	July 22, 1965 13:21:08.11	PST (–8 hrs)	NTS Area U2ah 37°07′54″N 116°04′04″W / 37.13175°N 116.06773°W / 37.13175; -116.06773 (Pongee)	1,274 m (4,180 ft) – 135.03 m (443.0 ft)	underground shaft, weapons development	less than 20 kt	Venting detected on site, 6 Ci (220 GBq)
Bronze	July 23, 1965 17:00:00.04	PST (–8 hrs)	NTS Area U7f 37°05′53″N 116°02′01″W / 37.09794°N 116.03374°W / 37.09794; -116.03374 (Bronze)	1,257 m (4,124 ft) – 530.96 m (1,742.0 ft)	underground shaft, weapons development	67 kt	Venting detected, 1.7 kCi (63 TBq)
Mauve	August 6, 1965 17:23:30.04	PST (–8 hrs)	NTS Area U3dp 37°01′04″N 116°02′27″W / 37.01771°N 116.04089°W / 37.01771; -116.04089 (Mauve)	1,185 m (3,888 ft) – 321 m (1,053 ft)	underground shaft, weapons development	18 kt
Ticking	August 21, 1965 13:43:08.15	PST (–8 hrs)	NTS Area U9bj 37°06′45″N 116°01′37″W / 37.11258°N 116.02689°W / 37.11258; -116.02689 (Ticking)	1,288 m (4,226 ft) – 210.31 m (690.0 ft)	underground shaft, weapons development	250 t	Venting detected, 2.6 kCi (96 TBq)
Centaur	August 27, 1965 13:51:13.11	PST (–8 hrs)	NTS Area U2ak 37°08′14″N 116°04′15″W / 37.13729°N 116.07097°W / 37.13729; -116.07097 (Centaur)	1,283 m (4,209 ft) – 171.91 m (564.0 ft)	underground shaft, weapons development	1 kt	Venting detected on site, 57 Ci (2,100 GBq)
Moa - 1 (with Screamer)	September 1, 1965 20:08:00.04	PST (–8 hrs)	NTS Area U3ed 37°02′14″N 116°00′53″W / 37.0373°N 116.01472°W / 37.0373; -116.01472 (Moa - 1)	1,194 m (3,917 ft) + N/A	underground shaft, weapons development	2.5 kt	Venting detected on site	simultaneous, separate.
Screamer - 2 (with Moa)	September 1, 1965 20:08:00.04	PST (–8 hrs)	NTS Area U3dg 37°01′23″N 116°00′36″W / 37.02292°N 116.00987°W / 37.02292; -116.00987 (Screamer - 2)	1,184 m (3,885 ft) – 301.9 m (990 ft)	underground shaft, weapon effect	9 kt	Venting detected on site, 63 kCi (2,300 TBq)	simultaneous, separate.
Elkhart	September 17, 1965 15:08:23.1	PST (–8 hrs)	NTS Area U9bs 37°06′40″N 116°02′08″W / 37.11098°N 116.03548°W / 37.11098; -116.03548 (Elkhart)	1,267 m (4,157 ft) – 219.46 m (720.0 ft)	underground shaft, weapons development	6 kt	Venting detected, 560 Ci (21,000 GBq)
Long Shot	October 29, 1965 21:00:00.08	NST (–11 hrs)	Amchitka Island, Alaska 51°26′14″N 179°10′49″E / 51.43709°N 179.18032°E / 51.43709; 179.18032 (Long Shot)	42 m (138 ft) – 700 m (2,300 ft)	underground shaft, joint verification	80 kt		Designed to test detection of underground nuclear tests; see Vela Uniform.
Sepia	November 12, 1965 18:00:00.05	PST (–8 hrs)	NTS Area U3en 37°03′00″N 116°01′22″W / 37.04996°N 116.02282°W / 37.04996; -116.02282 (Sepia)	1,202 m (3,944 ft) – 241.19 m (791.3 ft)	underground shaft, weapons development	7 kt	I-131 venting detected, 0.0011 Ci (0.041 GBq)
Kermet	November 23, 1965 18:17:32.1	PST (–8 hrs)	NTS Area U2c 37°09′43″N 116°04′18″W / 37.16187°N 116.0718°W / 37.16187; -116.0718 (Kermet)	1,304 m (4,278 ft) – 198.12 m (650.0 ft)	underground shaft, weapons development	500 t	Venting detected on site, 18 Ci (670 GBq)
Corduroy	December 3, 1965 15:13:02.1	PST (–8 hrs)	NTS Area U10k 37°09′53″N 116°03′11″W / 37.1646°N 116.05319°W / 37.1646; -116.05319 (Corduroy)	1,275 m (4,183 ft) – 681.53 m (2,236.0 ft)	underground shaft, weapons development	120 kt	Venting detected, 1.2 kCi (44 TBq)
Emerson	December 16, 1965 15:39:18.15	PST (–8 hrs)	NTS Area U2al 37°08′27″N 116°03′51″W / 37.14079°N 116.06405°W / 37.14079; -116.06405 (Emerson)	1,280 m (4,200 ft) – 259.87 m (852.6 ft)	underground shaft, weapons development	3 kt	Venting detected on site, 0.6 Ci (22 GBq)
Buff	December 16, 1965 19:15:00.04	PST (–8 hrs)	NTS Area U3dh 37°04′21″N 116°01′48″W / 37.07251°N 116.02998°W / 37.07251; -116.02998 (Buff)	1,223 m (4,012 ft) – 500.41 m (1,641.8 ft)	underground shaft, weapons development	51 kt
Maxwell	January 13, 1966 15:37:43.1	PST (–8 hrs)	NTS Area U9br 37°06′58″N 116°01′42″W / 37.11617°N 116.0284°W / 37.11617; -116.0284 (Maxwell)	1,283 m (4,209 ft) – 183.09 m (600.7 ft)	underground shaft, weapons development	less than 20 kt	Venting detected, 3 Ci (110 GBq)
Lampblack	January 18, 1966 18:35:00.04	PST (–8 hrs)	NTS Area U7i 37°05′30″N 116°01′10″W / 37.09165°N 116.01956°W / 37.09165; -116.01956 (Lampblack)	1,267 m (4,157 ft) – 561.48 m (1,842.1 ft)	underground shaft, weapons development	38 kt
Sienna	January 18, 1966 18:35:00.04	PST (–8 hrs)	NTS Area U3cj 37°02′14″N 116°01′09″W / 37.03726°N 116.01922°W / 37.03726; -116.01922 (Sienna)	1,193 m (3,914 ft) – 275.01 m (902.3 ft)	underground shaft, weapons development	4 kt	Venting detected
Dovekie	January 21, 1966 18:28:00.04	PST (–8 hrs)	NTS Area U3cd 37°01′54″N 116°00′59″W / 37.0318°N 116.01649°W / 37.0318; -116.01649 (Dovekie)	1,189 m (3,901 ft) – 333.05 m (1,092.7 ft)	underground shaft, weapons development	7 kt
Reo	January 22, 1966 15:17:19.1	PST (–8 hrs)	NTS Area U10m 37°09′26″N 116°02′23″W / 37.15718°N 116.03959°W / 37.15718; -116.03959 (Reo)	1,283 m (4,209 ft) – 213.36 m (700.0 ft)	underground shaft, weapons development	150 t	Venting detected on site, 10 Ci (370 GBq)
Plaid 2	February 3, 1966 18:17:37.1	PST (–8 hrs)	NTS Area U2r 37°07′35″N 116°04′13″W / 37.12626°N 116.07034°W / 37.12626; -116.07034 (Plaid 2)	1,272 m (4,173 ft) – 270.05 m (886.0 ft)	underground shaft, weapons development	3.5 kt	Venting detected on site, 7 Ci (260 GBq)
Rex	February 24, 1966 15:55:07.04	PST (–8 hrs)	NTS Area U20h(e) 37°16′18″N 116°26′05″W / 37.27178°N 116.43472°W / 37.27178; -116.43472 (Rex)	1,971 m (6,467 ft) – 671.69 m (2,203.7 ft)	underground shaft, weapons development	19 kt	Venting detected, 310 Ci (11,000 GBq)
Red Hot	March 5, 1966 18:15:00.1	PST (–8 hrs)	NTS Area U12g.06 37°10′28″N 116°12′33″W / 37.17445°N 116.20924°W / 37.17445; -116.20924 (Red Hot)	2,299 m (7,543 ft) – 405.38 m (1,330.0 ft)	tunnel, weapon effect	2 kt	Venting detected off site, 1 MCi (37 PBq)
Cinnamon - 2 (with Finfoot)	March 7, 1966 18:41:00.04	PST (–8 hrs)	NTS Area U3dm 37°02′05″N 116°01′54″W / 37.03461°N 116.03166°W / 37.03461; -116.03166 (Cinnamon - 2)	1,192 m (3,911 ft) + N/A	underground shaft, safety experiment	less than 20 kt	Venting detected on site	simultaneous, separate.
Finfoot - 1 (with Cinnamon)	March 7, 1966 18:41:00.07	PST (–8 hrs)	NTS Area U3du 37°02′14″N 116°01′49″W / 37.03736°N 116.03014°W / 37.03736; -116.03014 (Finfoot - 1)	1,193 m (3,914 ft) – 195.54 m (641.5 ft)	underground shaft, weapons development	5 kt	I-131 venting detected, 0	simultaneous, separate.
Clymer	March 12, 1966 18:04:13.11	PST (–8 hrs)	NTS Area U9ce 37°08′37″N 116°03′12″W / 37.14362°N 116.0534°W / 37.14362; -116.0534 (Clymer)	1,266 m (4,154 ft) – 397.09 m (1,302.8 ft)	underground shaft, weapons development	3 kt	Venting detected, 450 Ci (17,000 GBq)
Purple	March 18, 1966 19:00:00.04	PST (–8 hrs)	NTS Area U3ds 37°00′33″N 116°00′36″W / 37.0092°N 116.00996°W / 37.0092; -116.00996 (Purple)	1,180 m (3,870 ft) – 332.79 m (1,091.8 ft)	underground shaft, weapons development	7 kt
Templar	March 24, 1966 14:55:28.14	PST (–8 hrs)	NTS Area U9bt 37°06′48″N 116°01′56″W / 37.11329°N 116.03223°W / 37.11329; -116.03223 (Templar)	1,275 m (4,183 ft) – 151 m (495 ft)	underground shaft, peaceful research	370 t	I-131 venting detected, 0	Plowshare – excavation device development.
Lime	April 1, 1966 18:40:00.04	PST (–8 hrs)	NTS Area U7j 37°06′10″N 116°01′15″W / 37.10265°N 116.02081°W / 37.10265; -116.02081 (Lime)	1,291 m (4,236 ft) – 561.44 m (1,842.0 ft)	underground shaft, weapons development	less than 20 kt
Stutz	April 6, 1966 13:57:17.1	PST (–8 hrs)	NTS Area U2ca 37°08′22″N 116°08′31″W / 37.13941°N 116.14203°W / 37.13941; -116.14203 (Stutz)	1,458 m (4,783 ft) – 225.34 m (739.3 ft)	underground shaft, weapons development	5 kt	Venting detected, 1 Ci (37 GBq)
Tomato	April 7, 1966 22:27:30.04	PST (–8 hrs)	NTS Area U3ek 37°01′03″N 115°59′35″W / 37.01737°N 115.99309°W / 37.01737; -115.99309 (Tomato)	1,195 m (3,921 ft) – 226.31 m (742.5 ft)	underground shaft, weapons development	6 kt
Duryea	April 14, 1966 14:13:43.1	PST (–8 hrs)	NTS Area U20a1 37°14′33″N 116°25′55″W / 37.2425°N 116.43192°W / 37.2425; -116.43192 (Duryea)	1,960 m (6,430 ft) – 544.25 m (1,785.6 ft)	underground shaft, weapons development	70 kt	Venting detected, 2 Ci (74 GBq)
Fenton	April 23, 1966 14:55:26.14	PST (–8 hrs)	NTS Area U2m1 37°09′38″N 116°05′02″W / 37.16052°N 116.08381°W / 37.16052; -116.08381 (Fenton)	1,321 m (4,334 ft) – 167.64 m (550.0 ft)	underground shaft, weapons development	1.4 kt	Venting detected off site, 1.7 kCi (63 TBq)
Pin Stripe	April 25, 1966 18:38:00.14	PST (–8 hrs)	NTS Area U11b 36°53′15″N 115°56′30″W / 36.8874°N 115.94159°W / 36.8874; -115.94159 (Pin Stripe)	1,066 m (3,497 ft) – 295.66 m (970.0 ft)	underground shaft, weapon effect	5 kt	Venting detected off site, 210 kCi (7,800 TBq)
Ochre	April 29, 1966 13:33:00.04	PST (–8 hrs)	NTS Area U3ec 37°02′37″N 116°01′24″W / 37.04364°N 116.02323°W / 37.04364; -116.02323 (Ochre)	1,196 m (3,924 ft) – 126.14 m (413.8 ft)	underground shaft, safety experiment	less than 20 kt
Traveler	May 4, 1966 13:32:17.09	PST (–8 hrs)	NTS Area U2cd 37°08′13″N 116°08′17″W / 37.13705°N 116.13807°W / 37.13705; -116.13807 (Traveler)	1,430 m (4,690 ft) – 196.76 m (645.5 ft)	underground shaft, weapons development	20 kt	Venting detected, 170 Ci (6,300 GBq)
Cyclamen	May 5, 1966 14:00:00.04	PST (–8 hrs)	NTS Area U3cx 37°03′02″N 116°02′19″W / 37.05056°N 116.03873°W / 37.05056; -116.03873 (Cyclamen)	1,203 m (3,947 ft) – 304.97 m (1,000.6 ft)	underground shaft, weapons development	12 kt		included heavy element experiment.
Chartreuse	May 6, 1966 15:00:00.08	PST (–8 hrs)	NTS Area U19d 37°20′53″N 116°19′22″W / 37.34795°N 116.32283°W / 37.34795; -116.32283 (Chartreuse)	2,064 m (6,772 ft) – 666.75 m (2,187.5 ft)	underground shaft, weapons development	73 kt
Tapestry	May 12, 1966 19:37:26.2	PST (–8 hrs)	NTS Area U2an 37°08′03″N 116°04′19″W / 37.13423°N 116.07198°W / 37.13423; -116.07198 (Tapestry)	1,281 m (4,203 ft) – 247.19 m (811.0 ft)	underground shaft, weapons development	10 kt	Venting detected on site, 8.6 kCi (320 TBq)
Piranha	May 13, 1966 13:30:00.04	PST (–8 hrs)	NTS Area U7e 37°05′13″N 116°02′04″W / 37.08681°N 116.03431°W / 37.08681; -116.03431 (Piranha)	1,237 m (4,058 ft) – 548.72 m (1,800.3 ft)	underground shaft, weapons development	120 kt
Dumont	May 19, 1966 13:56:28.14	PST (–8 hrs)	NTS Area U2t 37°06′40″N 116°03′32″W / 37.11109°N 116.05879°W / 37.11109; -116.05879 (Dumont)	1,252 m (4,108 ft) – 670.77 m (2,200.7 ft)	underground shaft, weapons development	200 kt	Venting detected, 35 Ci (1,300 GBq)
Discus Thrower	May 27, 1966 20:00:00.04	PST (–8 hrs)	NTS Area U8a 37°10′42″N 116°05′55″W / 37.17834°N 116.09862°W / 37.17834; -116.09862 (Discus Thrower)	1,380 m (4,530 ft) – 337.06 m (1,105.8 ft)	underground shaft, weapon effect	22 kt
Pile Driver	June 2, 1966 15:30:00.09	PST (–8 hrs)	NTS Area U15a.01 37°13′37″N 116°03′23″W / 37.22701°N 116.0564°W / 37.22701; -116.0564 (Pile Driver)	1,525 m (5,003 ft) – 462.69 m (1,518.0 ft)	underground shaft, weapon effect	62 kt	Venting detected on site, 37 kCi (1,400 TBq)	Investigate the simulated effects of a nuclear surface detonation on a deeply buried, superhard command and control center in a granite rock formation.
Tan	June 3, 1966 14:00:00.04	PST (–8 hrs)	NTS Area U7k 37°04′06″N 116°02′10″W / 37.06843°N 116.03606°W / 37.06843; -116.03606 (Tan)	1,213 m (3,980 ft) – 560.68 m (1,839.5 ft)	underground shaft, weapons development	160 kt
Puce	June 10, 1966 14:30:00.04	PST (–8 hrs)	NTS Area U3bs 37°03′34″N 116°02′23″W / 37.05937°N 116.03967°W / 37.05937; -116.03967 (Puce)	1,208 m (3,963 ft) – 485.55 m (1,593.0 ft)	underground shaft, weapons development	less than 20 kt
Double Play	June 15, 1966 17:00:00.04	PST (–8 hrs)	NTS Area U16a.03 37°00′35″N 116°12′14″W / 37.00959°N 116.20382°W / 37.00959; -116.20382 (Double Play)	1,954 m (6,411 ft) – 327.7 m (1,075 ft)	underground shaft, weapon effect	less than 20 kt	Venting detected off site, 840 kCi (31,000 TBq)
Kankakee	June 15, 1966 18:02:47.13	PST (–8 hrs)	NTS Area U10p 37°10′17″N 116°02′59″W / 37.17148°N 116.04973°W / 37.17148; -116.04973 (Kankakee)	1,281 m (4,203 ft) – 455.25 m (1,493.6 ft)	underground shaft, weapons development	200 kt	Venting detected, 160 Ci (5,900 GBq)
Vulcan	June 25, 1966 17:13:00.07	PST (–8 hrs)	NTS Area U2bd 37°09′19″N 116°04′23″W / 37.15535°N 116.07312°W / 37.15535; -116.07312 (Vulcan)	1,300 m (4,300 ft) – 322.11 m (1,056.8 ft)	underground shaft, peaceful research	25 kt	Venting detected, 250 Ci (9,200 GBq)	Project Plowshare - Device development, heavy element production.
Halfbeak	June 30, 1966 22:15:00.07	PST (–8 hrs)	NTS Area U19b 37°18′57″N 116°17′59″W / 37.31575°N 116.29985°W / 37.31575; -116.29985 (Halfbeak)	2,043 m (6,703 ft) – 819.3 m (2,688 ft)	underground shaft, weapons development	365 kt

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