Today in Nuclear Test History – June 26

Military Technology

Operation Mandrel. Test Mint Leaf. Nevada Test Site, Area 12. Reentry team, U12t Tunnel, 1970 (photograph 3233-13, on file at the Nuclear Testing Archive, Las Vegas)

MYSTERY WIRE — On this day, June 26, seven tests were conducted. In both 1969 and 1970 double tests were conducted.

The United States has officially conducted 1,054 nuclear tests, many of them at the Nevada National Security Site (NNSS) and others at Bikini Atoll, Enewetak Atoll, Christmas Island, and other Pacific Ocean locations.

The testing began July 16, 1945 with Trinity near Alamogordo, New Mexico and continued until September 23, 1992 with Divider, part of Operation Julin.


June 26, 1967

Operation Latchkey – Midi Mist
NNSS map
Tunnel
20 kt


June 26, 1969

Operation Bowline – Bowl 1
NNSS map
Tunnel
2 kt

Operation Bowline – Bowl 2
NNSS map
Tunnel
3 kt


June 26, 1970
Simultaneous tests in separate holes

Operation Mandrel – Amica-Violet
NNSS map
Underground
2 mt

Operation Mandrel – Amica-Yellow
NNSS map
Underground
3.5 mt


June 26, 1975

Operation Bedrock – Camembert
NNSS map
Undersground
750 kt


June 26, 1985

Operation Grenadier – Maribo
NNSS map
Underground
3.5 kt

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