Following the success of Operation Grapple in which the United Kingdom became the third nation to acquire thermonuclear weapons after the United States and the Soviet Union, Britain launched negotiati
Krakatau subcritical experiment being lowered into the floor of the tunnel of the U1a Complex at the Nevada Test Site (2006). The cables extending from the hole will carry data from the experiment to recording instruments.
Preparing for an underground test at the Nevada Test Site. Final test preparations include running miles of cable downhole which will transmit vital test information to the diagnostic trailers to the left. A rack containing instrumentation to go downhole is assembled in the tower to the right. Subsidence craters from earlier underground tests dot the landscape.
The Krakatau subcritical experiment is prepared to be lowered into the tunnel of the U1a Complex at the Nevada Test Site
Operation Grapple
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Operation Grapple was a set of four series of British nuclear weapons tests of early atomic bombs and hydrogen bombs carried out in 1957 and 1958 at Malden Island and Kiritimati in the Gilbert and Ell
British nuclear testing in the United States
…Following the success of Operation Grapple in which the United Kingdom became the third nation to acquire thermonuclear weapons after the United States and the Soviet Union, Britain launched…
Grapple X test in November 1957. Britain's first fully successful hydrogen bomb test
The survey ship HMNZS Lachlan
Royal Engineers assemble huts on Christmas Island
HMS Warrior, a Colossus-class light aircraft carrier, was the headquarters ship for Britain's atom hydrogen tests on Christmas Island.