The story
In July 1946 the United States carried out Operation Crossroads at Bikini Atoll in the Marshall Islands, the first nuclear tests after Hiroshima and Nagasaki. On 1 July the Able test dropped a bomb from an aircraft over a target fleet of about ninety old and captured ships. On 25 July the Baker test was fired underwater in the lagoon, sending radioactive spray over the ships. Before the tests the roughly 167 Bikinians were asked to leave their home, and went to Rongerik Atoll, which could not feed them, and later to other islands.
Between 1946 and 1958 the United States conducted 23 tests at Bikini, including Castle Bravo on 1 March 1954, a 15 megaton hydrogen bomb far stronger than expected that showered fallout on inhabited islands and a Japanese fishing boat, the Lucky Dragon. In all, the United States fired 67 tests in the Marshall Islands. The atoll is still unfit for permanent living, and the Bikinians received compensation through a US settlement. Bikini was listed as a World Heritage site in 2010. Pacific testing fed a regional anti-nuclear movement.
Why it mattered
- The tests showed how nuclear weapons affected warships, shaping postwar naval planning.
- The Bikinians became among the first people displaced by nuclear testing, and their cases informed later claims.
- The Pacific tests helped drive the regional anti-nuclear movement, leading to nuclear free zones in the South Pacific.
- Fallout from Castle Bravo led to public concern over radiation in food and the sea.
Sources
- Bikini Britannica
- Bikini Atoll Nuclear Test Site UNESCO World Heritage Centre
- Bikini Atoll Lawrence Livermore National Laboratory
Drafted by AI (Claude) from the sources above and checked against them by AI; no historian has reviewed this page. Spot a mistake? Suggest a correction. How pages are made
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