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Grenadier
Information
Country United States
Period 1984–1985
Number of tests 16
Test type underground shaft, tunnel
Max. yield 150 kilotonnes of TNT (630 TJ)

Operation Grenadier was a series of 16 nuclear tests conducted by the United States in 1984–1985 at the Nevada Test Site. These tests followed the Operation Fusileer series and preceded the Operation Charioteer series.

United States' Grenadier series tests and detonations
Name Date time (UT) Local time zone Location Elevation + height Delivery
Purpose
Device Yield Fallout References Notes
Vermejo October 2, 1984 18:14:00.103 PST (–8 hrs)
NTS Area U4r 37°05′07″N 116°03′13″W / 37.08516°N 116.0537°W / 37.08516; -116.0537 (Vermejo) 1,229 m (4,032 ft) – 350.22 m (1,149.0 ft) underground shaft,
weapons development
2.5 kt
Villita November 10, 1984 16:40:00.09 PST (–8 hrs)
NTS Area U3ld 37°00′00″N 116°01′05″W / 37.00003°N 116.01816°W / 37.00003; -116.01816 (Villita) 1,177 m (3,862 ft) – 372.2 m (1,221 ft) underground shaft,
weapons development
5 kt
Tierra December 15, 1984 14:45:00.0 PST (–8 hrs)
NTS Area U19ac 37°16′53″N 116°18′23″W / 37.28131°N 116.30629°W / 37.28131; -116.30629 (Tierra) 2,118 m (6,949 ft) – 640 m (2,100 ft) underground shaft,
weapons development
80 kt Venting detected, 600 Ci (22,000 GBq)
Minero December 20, 1984 16:20:00.11 PST (–8 hrs)
NTS Area U3lt 37°00′43″N 116°02′44″W / 37.01192°N 116.04565°W / 37.01192; -116.04565 (Minero) 1,187 m (3,894 ft) – 244.8 m (803 ft) underground shaft,
weapons development
2.5 kt
Vaughn March 15, 1985 16:31:00.1 PST (–8 hrs)
NTS Area U3lr 37°03′29″N 116°02′46″W / 37.0581°N 116.0461°W / 37.0581; -116.0461 (Vaughn) 1,211 m (3,973 ft) – 425.5 m (1,396 ft) underground shaft,
weapons development
20 kt Venting detected, 100 Ci (3,700 GBq)
Cottage March 23, 1985 18:30:00.082 PST (–8 hrs)
NTS Area U8j 37°10′48″N 116°05′23″W / 37.17993°N 116.08983°W / 37.17993; -116.08983 (Cottage) 1,362 m (4,469 ft) – 515 m (1,690 ft) underground shaft,
weapons development
60 kt
Hermosa April 2, 1985 20:00:00.09 PST (–8 hrs)
NTS Area U7bs 37°05′41″N 116°01′58″W / 37.09476°N 116.03289°W / 37.09476; -116.03289 (Hermosa) 1,251 m (4,104 ft) – 638.25 m (2,094.0 ft) underground shaft,
weapons development
150 kt The Soviet Union alleged that this test violated the Threshold Test Ban Treaty.
Misty Rain April 6, 1985 23:15:00.09 PST (–8 hrs)
NTS Area U12n.17 37°12′03″N 116°12′29″W / 37.20078°N 116.20805°W / 37.20078; -116.20805 (Misty Rain) 2,212 m (7,257 ft) – 388.6 m (1,275 ft) tunnel,
weapon effect
15 kt Venting detected off site, 63 Ci (2,300 GBq)
Towanda May 2, 1985 15:20:00.083 PST (–8 hrs)
NTS Area U19ab 37°15′12″N 116°19′34″W / 37.25335°N 116.32609°W / 37.25335; -116.32609 (Towanda) 2,085 m (6,841 ft) – 660.2 m (2,166 ft) underground shaft,
weapons development
150 kt
Salut June 12, 1985 15:15:00.082 PST (–8 hrs)
NTS Area U20ak 37°14′52″N 116°29′24″W / 37.2478°N 116.48995°W / 37.2478; -116.48995 (Salut) 1,873 m (6,145 ft) – 608.08 m (1,995.0 ft) underground shaft,
weapons development
100 kt Venting detected, 4 Ci (150 GBq)
Ville June 12, 1985 17:30:00.088 PST (–8 hrs)
NTS Area U4am 37°05′18″N 116°05′06″W / 37.08832°N 116.0849°W / 37.08832; -116.0849 (Ville) 1,250 m (4,100 ft) – 293.2 m (962 ft) underground shaft,
weapons development
8 kt Venting detected, 0.1 Ci (3.7 GBq)
Maribo June 26, 1985 18:03:00.08 PST (–8 hrs)
NTS Area U2cs 37°07′25″N 116°07′19″W / 37.12372°N 116.12201°W / 37.12372; -116.12201 (Maribo) 1,352 m (4,436 ft) – 381 m (1,250 ft) underground shaft,
weapons development
3.5 kt Venting detected, 4 Ci (150 GBq)
Serena July 25, 1985 14:00:00.088 PST (–8 hrs)
NTS Area U20an 37°17′50″N 116°26′20″W / 37.2972°N 116.43896°W / 37.2972; -116.43896 (Serena) 1,942 m (6,371 ft) – 597 m (1,959 ft) underground shaft,
weapons development
45 kt Venting detected, 3 Ci (110 GBq)
Cebrero August 14, 1985 13:00:00.082 PST (–8 hrs)
NTS Area U9cw 37°06′40″N 116°00′55″W / 37.11103°N 116.01525°W / 37.11103; -116.01525 (Cebrero) 1,316 m (4,318 ft) – 183 m (600 ft) underground shaft,
weapons development
less than 20 kt Venting detected
Chamita August 17, 1985 16:25:00.09 PST (–8 hrs)
NTS Area U3lz 37°00′08″N 116°02′38″W / 37.00227°N 116.04402°W / 37.00227; -116.04402 (Chamita) 1,181 m (3,875 ft) – 331.62 m (1,088.0 ft) underground shaft,
weapons development
8 kt
Ponil September 27, 1985 14:15:00.08 PST (–8 hrs)
NTS Area U7bv 37°05′23″N 116°00′10″W / 37.08976°N 116.00264°W / 37.08976; -116.00264 (Ponil) 1,284 m (4,213 ft) – 364.8 m (1,197 ft) underground shaft,
weapons development
10 kt
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