Nuclear Testing Since 1945

A time-lapse map of every nuclear explosion since 1945 – by Isao Hashimoto

Updates

Trinity site cancer study expected to finish in 2019

  • Updated

ALBUQUERQUE — A long-anticipated study into the cancer risks of New Mexico residents living near the site of the world’s first atomic bomb test likely will be published in 2019, the National Cancer Institute announced.

Institute spokesman Michael Levin told the Associated Press that researchers are examining data on diet and radiation exposure on residents who lived near the World War II-era Trinity test site, and scientists expect to finish the study by early next year.

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UN council urges all to ratify security ban

Security Council Urges All to Ratify Comprehensive Test Ban Treaty

“Reaffirming that proliferation of weapons of mass destruction, and their means of delivery, threatens international peace and security, the United Nations Security Council today adopted a resolution urging all States who haven’t done so to sign the Comprehensive Nuclear-Test-Ban Treaty”

-From UN News

“A world free of nuclear of weapons goes by stopping testing too, and then taking steps that will reinforce the agreements that are already here, and then leading us towards what we all want: a world free of nuclear weapons; a world free of any attempt of modernization that some are talking about today.”

-Lassina Zerbo, Executive Secretary of CTBTO:

70th Anniversary of the Trinity Test

The first atomic detonation. Oppenheimer recalls his impressions of the moment for an interview on NBC in 1965.

The first nuclear weapon test was carried out by the United States at the Trinity site on July 16, 1945, with a yield approximately equivalent to 20 kilotons. The first hydrogen bomb, codenamed “Ivy Mike”, was tested at the Enewetak atoll in the Marshall Islands in November 1952, also by the United States. The largest nuclear weapon ever tested was the “Tsar Bomba” of the Soviet Union at Novaya Zemlya on October 30, 1961, with an estimated yield of around 50 megatons.

In 1963, many (but not all) nuclear and many non-nuclear states signed the Limited Test Ban Treaty, pledging to refrain from testing nuclear weapons in the atmosphere, underwater, or in outer space. The treaty permitted underground nuclear testing. France continued atmospheric testing until 1974, China continued up until 1980. Neither has ever signed the treaty.[1]

The United States conducted its last underground test in 1992, the Soviet Union in 1990, the U.K. in 1991, and both China and France in 1996. After signing the Comprehensive Test Ban Treaty in 1996 (which has as of 2012 not yet entered into force), all these states have pledged to discontinue all nuclear testing. Non-signatories India and Pakistan last tested nuclear weapons in 1998. The most recent nuclear test was by North Korea on Feb. 12, 2013.

For a more detailed resource on the history of Nuclear testing, see this United Nations guide,released August 29, 2012, the official ‘International Day Against Nuclear Tests’.

Resources

Quotes

Secretary-General Ban Ki-moon,

“Together, let us demand an end to all nuclear tests and get on with the unfinished business of achieving a world free of nuclear weapons.” –Message on the International Day against Nuclear Tests, July 2014...