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Nuclear weapons testing

Index Nuclear weapons testing

Nuclear weapons tests are experiments carried out to determine the effectiveness, yield, and explosive capability of nuclear weapons. [1]

137 relations: African Nuclear-Weapon-Free Zone Treaty, Agreement on the Prevention of Nuclear War, Alaska, Algeria, Amchitka, Antarctic Treaty System, Anti-Ballistic Missile Treaty, Atmosphere of Earth, Atomic bombings of Hiroshima and Nagasaki, Australia, British nuclear tests at Maralinga, Castle Bravo, Centers for Disease Control and Prevention, Chagai District, Cold War, Colorado, Comprehensive Nuclear-Test-Ban Treaty, Critical mass, Criticality accident, Daigo Fukuryū Maru, Desert Rock exercises, Effects of nuclear explosions, Enewetak Atoll, Fangataufa, France and weapons of mass destruction, French Polynesia, High-altitude nuclear explosion, Historical nuclear weapons stockpiles and nuclear tests by country, History of nuclear weapons, How to Photograph an Atomic Bomb, In Eker, India and weapons of mass destruction, Intermediate-Range Nuclear Forces Treaty, Iodine-131, Ionosphere, Irradiation, Israel, Ivy Mike, Kazakhstan, Kiritimati, List of military nuclear accidents, List of nuclear weapons tests, List of nuclear weapons tests of China, List of nuclear weapons tests of India, List of nuclear weapons tests of North Korea, List of nuclear weapons tests of Pakistan, List of nuclear weapons tests of the Soviet Union, List of nuclear weapons tests of the United States, List of states with nuclear weapons, Live fire exercise, ..., Lop Nur, Los Alamos National Laboratory, Magnetosphere, Manhattan Project, Marshall Islands, Minor Scale, Mississippi, Moon Treaty, Moruroa, Mushroom cloud, National Atomic Testing Museum, National Cancer Institute, National technical means of verification, Neutron reflector, Nevada, Nevada Test Site, New Mexico, North Korea, Novaya Zemlya, Nuclear electromagnetic pulse, Nuclear fallout, Nuclear weapon, Nuclear weapon design, Nuclear weapon yield, Nuclear weapons and the United Kingdom, Nuclear weapons of the United States, Operation Cresset, Operation Crossroads, Operation Dominic, Outer space, Outer Space Treaty, Pacific Ocean, Pacific Proving Grounds, Pakistan and weapons of mass destruction, Partial Nuclear Test Ban Treaty, Peaceful nuclear explosion, Pokhran, Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization, Project Gnome, Project Plowshare, Radiation Exposure Compensation Act, Radioactive contamination, Ras Koh Hills, RDS-1, Reggane, Russia, Sahara, Seabed Arms Control Treaty, Sedan (nuclear test), Seismology, Semipalatinsk Test Site, South Australia, Southeast Asian Nuclear-Weapon-Free Zone Treaty, Soviet Union, START I, START II, Strategic Arms Limitation Talks, Strategic Offensive Reductions Treaty, Subsidence crater, Supercomputer, Test Readiness Program, Thermonuclear weapon, Threshold Test Ban Treaty, Thyroid cancer, TNT, TNT equivalent, Totskoye nuclear exercise, Treaty of Rarotonga, Treaty of Tlatelolco, Treaty on Conventional Armed Forces in Europe, Treaty on Open Skies, Treaty on the Non-Proliferation of Nuclear Weapons, Trinity (nuclear test), Trinity and Beyond, Tsar Bomba, Turkmenistan, Ukraine, Underground nuclear weapons testing, Underwater explosion, Universal Time, Uzbekistan, Vela Incident, Vela Uniform, Xinjiang, 1958 US–UK Mutual Defence Agreement, 2017 North Korean nuclear test, 2017–18 North Korea crisis. Expand index (87 more) »

African Nuclear-Weapon-Free Zone Treaty

The African Nuclear Weapon Free Zone Treaty, also known as the Treaty of Pelindaba (named after South Africa's main Nuclear Research Centre, run by The South African Nuclear Energy Corporation and was the location where South Africa's atomic bombs of the 1970s were developed, constructed and subsequently stored), establishes a Nuclear-Weapon-Free Zone in Africa.

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Agreement on the Prevention of Nuclear War

The Prevention of Nuclear War Agreement was created to reduce the danger of nuclear war between the United States and the Union of Soviet Socialist Republics.

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Alaska

Alaska (Alax̂sxax̂) is a U.S. state located in the northwest extremity of North America.

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Algeria

Algeria (الجزائر, familary Algerian Arabic الدزاير; ⴷⵣⴰⵢⴻⵔ; Dzayer; Algérie), officially the People's Democratic Republic of Algeria, is a sovereign state in North Africa on the Mediterranean coast.

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Amchitka

Amchitka (Amchixtax̂) is a volcanic, tectonically unstable island in the Rat Islands group of the Aleutian Islands in southwest Alaska.

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Antarctic Treaty System

The Antarctic Treaty and related agreements, collectively known as the Antarctic Treaty System (ATS), regulate international relations with respect to Antarctica, Earth's only continent without a native human population.

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Anti-Ballistic Missile Treaty

The Anti-Ballistic Missile Treaty (ABM Treaty or ABMT) (1972—2002) was an arms control treaty between the United States and the Soviet Union on the limitation of the anti-ballistic missile (ABM) systems used in defending areas against ballistic missile-delivered nuclear weapons.

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Atmosphere of Earth

The atmosphere of Earth is the layer of gases, commonly known as air, that surrounds the planet Earth and is retained by Earth's gravity.

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Atomic bombings of Hiroshima and Nagasaki

During the final stage of World War II, the United States detonated two nuclear weapons over the Japanese cities of Hiroshima and Nagasaki on August 6 and 9, 1945, respectively.

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Australia

Australia, officially the Commonwealth of Australia, is a sovereign country comprising the mainland of the Australian continent, the island of Tasmania and numerous smaller islands.

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British nuclear tests at Maralinga

British nuclear tests at Maralinga occurred between 1956 and 1963 at the Maralinga site, part of the Woomera Prohibited Area in South Australia and about 800 kilometres north-west of Adelaide.

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Castle Bravo

Castle Bravo was the first in a series of high-yield thermonuclear weapon design tests conducted by the United States at Bikini Atoll, Marshall Islands, as part of Operation Castle.

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Centers for Disease Control and Prevention

The Centers for Disease Control and Prevention (CDC) is the leading national public health institute of the United States.

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Chagai District

Chagai District Westen Sanjrani Agency (also Chaghi) (ضِلع چاغى), (ضلع چاغی),is the largest district of Pakistan and is located on the north west corner of Balochistan, Pakistan.

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Cold War

The Cold War was a state of geopolitical tension after World War II between powers in the Eastern Bloc (the Soviet Union and its satellite states) and powers in the Western Bloc (the United States, its NATO allies and others).

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Colorado

Colorado is a state of the United States encompassing most of the southern Rocky Mountains as well as the northeastern portion of the Colorado Plateau and the western edge of the Great Plains.

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Comprehensive Nuclear-Test-Ban Treaty

The Comprehensive Nuclear-Test-Ban Treaty (CTBT) is a multilateral treaty that bans all nuclear explosions, for both civilian and military purposes, in all environments.

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Critical mass

A critical mass is the smallest amount of fissile material needed for a sustained nuclear chain reaction.

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Criticality accident

A criticality accident is an uncontrolled nuclear fission chain reaction.

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Daigo Fukuryū Maru

was a Japanese tuna fishing boat with a crew of 23 men which was contaminated by nuclear fallout from the United States Castle Bravo thermonuclear weapon test at Bikini Atoll on March 1, 1954.

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Desert Rock exercises

Desert Rock was the code name of a series of exercises conducted by the US military in conjunction with atmospheric nuclear tests.

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Effects of nuclear explosions

The energy released from a nuclear weapon detonated in the troposphere can be divided into four basic categories.

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Enewetak Atoll

Enewetak Atoll (also spelled Eniwetok Atoll or sometimes Eniewetok; Ānewetak,, or Āne-wātak) is a large coral atoll of 40 islands in the Pacific Ocean and with its 850 people forms a legislative district of the Ralik Chain of the Marshall Islands.

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Fangataufa

Fangataufa (or Fangatafoa) is a small, low, narrow, coral atoll in the eastern side of the Tuamotu Archipelago.

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France and weapons of mass destruction

France is one of the five "Nuclear Weapons States" under the Treaty on the Non-Proliferation of Nuclear Weapons, but is not known to possess or develop any chemical or biological weapons.

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French Polynesia

French Polynesia (Polynésie française; Pōrīnetia Farāni) is an overseas collectivity of the French Republic; collectivité d'outre-mer de la République française (COM), sometimes unofficially referred to as an overseas country; pays d'outre-mer (POM).

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High-altitude nuclear explosion

High-altitude nuclear explosions are the result of nuclear weapons testing.

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Historical nuclear weapons stockpiles and nuclear tests by country

This article shows various estimates of the nuclear weapons stockpiles of various countries at various points in time.

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History of nuclear weapons

Nuclear weapons possess enormous destructive power from nuclear fission or combined fission and fusion reactions.

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How to Photograph an Atomic Bomb

How to Photograph an Atomic Bomb is a book written by Peter Kuran and published in 2006 by VCE.

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In Eker

In Eker (also written as I-n-Eker or In Ekker) is a village in the commune of In Amguel, in Tamanrasset District, Tamanrasset Province, Algeria.

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India and weapons of mass destruction

The Republic of India has developed and possesses weapons of mass destruction in the form of nuclear weapons.

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Intermediate-Range Nuclear Forces Treaty

The Intermediate-Range Nuclear Forces Treaty (INF Treaty) is the abbreviated name of the Treaty Between the United States of America and the Union of Soviet Socialist Republics on the Elimination of Their Intermediate-Range and Shorter-Range Missiles, a 1987 agreement between the United States and the Soviet Union (and later its successor states, in particular the Russian Federation).

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Iodine-131

Iodine-131 (131I) is an important radioisotope of iodine discovered by Glenn Seaborg and John Livingood in 1938 at the University of California, Berkeley.

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Ionosphere

The ionosphere is the ionized part of Earth's upper atmosphere, from about to altitude, a region that includes the thermosphere and parts of the mesosphere and exosphere.

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Irradiation

Irradiation is the process by which an object is exposed to radiation.

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Israel

Israel, officially the State of Israel, is a country in the Middle East, on the southeastern shore of the Mediterranean Sea and the northern shore of the Red Sea.

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Ivy Mike

Ivy Mike was the codename given to the first test of a full-scale thermonuclear device, in which part of the explosive yield comes from nuclear fusion.

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Kazakhstan

Kazakhstan (Qazaqstan,; kəzɐxˈstan), officially the Republic of Kazakhstan (Qazaqstan Respýblıkasy; Respublika Kazakhstan), is the world's largest landlocked country, and the ninth largest in the world, with an area of.

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Kiritimati

Kiritimati, or Christmas Island, is a Pacific Ocean raised coral atoll in the northern Line Islands.

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List of military nuclear accidents

This article lists notable military accidents involving nuclear material.

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List of nuclear weapons tests

Nuclear weapons testing according to the standard definition used in treaty language for the space/time requirement is: In conformity with treaties between the United States and the Soviet Union, a salvo is defined, for multiple explosions for peaceful purposes, as two or more separate explosions where a period of time between successive individual explosions does not exceed 5 seconds and where the burial points of all explosive devices can be connected by segments of straight lines, each of them connecting two burial points, and the total length does not exceed 40 kilometers.

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List of nuclear weapons tests of China

The List of nuclear weapons tests is a listing of the Chinese nuclear tests conducted from 1964 through 1996.

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List of nuclear weapons tests of India

India's nuclear test series consists in a pair of series: Pokhran I and Pokhran II.

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List of nuclear weapons tests of North Korea

North Korea has conducted six nuclear tests, in 2006, 2009, 2013, twice in 2016, and 2017.

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List of nuclear weapons tests of Pakistan

The Nuclear testing series programme refers to an active military programme directed towards the development of techniques of experimenting nuclear forces and further investigations of the blast effects.

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List of nuclear weapons tests of the Soviet Union

The nuclear weapons tests of the Soviet Union were performed between 1949 and 1990 as part of the nuclear arms race.

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List of nuclear weapons tests of the United States

The nuclear weapons tests of the United States were performed between 1945 and 1992 as part of the nuclear arms race.

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List of states with nuclear weapons

There are eight sovereign states that have successfully detonated nuclear weapons.

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Live fire exercise

A live-fire exercise or LFX is any military exercise in which a realistic scenario for the use of specific equipment is demonstrated.

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Lop Nur

Lop Nur or Lop Nor (from a Mongolian name meaning "Lop Lake") is a former salt lake in China, now largely dried-up, located between the Taklamakan and Kumtag deserts in the southeastern portion of Xinjiang Uygur Autonomous Region in the People's Republic of China.

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Los Alamos National Laboratory

Los Alamos National Laboratory (Los Alamos or LANL for short) is a United States Department of Energy national laboratory initially organized during World War II for the design of nuclear weapons as part of the Manhattan Project.

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Magnetosphere

A magnetosphere is the region of space surrounding an astronomical object in which charged particles are manipulated or affected by that object's magnetic field.

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Manhattan Project

The Manhattan Project was a research and development undertaking during World War II that produced the first nuclear weapons.

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Marshall Islands

The Marshall Islands, officially the Republic of the Marshall Islands (Aolepān Aorōkin M̧ajeļ), is an island country located near the equator in the Pacific Ocean, slightly west of the International Date Line.

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Minor Scale

Minor Scale was a test conducted on June 27, 1985, by the United States Defense Nuclear Agency (now part of the Defense Threat Reduction Agency) involving the detonation of several thousand tons of conventional explosives to simulate the explosion of a small nuclear bomb.

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Mississippi

Mississippi is a state in the Southern United States, with part of its southern border formed by the Gulf of Mexico.

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Moon Treaty

The Agreement Governing the Activities of States on the Moon and Other Celestial Bodies, better known as the Moon Treaty or Moon Agreement, is a multilateral treaty that turns jurisdiction of all celestial bodies (including the orbits around such bodies) over to the international community.

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Moruroa

Moruroa (Mururoa, Mururura), also historically known as Aopuni, is an atoll which forms part of the Tuamotu Archipelago in French Polynesia in the southern Pacific Ocean.

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Mushroom cloud

A mushroom cloud is a distinctive pyrocumulus mushroom-shaped cloud of debris/smoke and usually condensed water vapor resulting from a large explosion.

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National Atomic Testing Museum

The National Atomic Testing Museum in Las Vegas, Nevada, documents the history of nuclear testing at the Nevada Test Site (NTS) in the desert north of Las Vegas.

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National Cancer Institute

The National Cancer Institute (NCI) is part of the National Institutes of Health (NIH), which is one of eleven agencies that are part of the U.S. Department of Health and Human Services.

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National technical means of verification

National technical means of verification (NTM) are monitoring techniques, such as satellite photography, used to verify adherence to international treaties.

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Neutron reflector

A neutron reflector is any material that reflects neutrons.

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Nevada

Nevada (see pronunciations) is a state in the Western, Mountain West, and Southwestern regions of the United States of America.

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Nevada Test Site

The Nevada National Security Site (N2S2 or NNSS), previously the Nevada Test Site (NTS), is a United States Department of Energy reservation located in southeastern Nye County, Nevada, about 65 miles (105 km) northwest of the city of Las Vegas.

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New Mexico

New Mexico (Nuevo México, Yootó Hahoodzo) is a state in the Southwestern Region of the United States of America.

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North Korea

North Korea (Chosŏn'gŭl:조선; Hanja:朝鮮; Chosŏn), officially the Democratic People's Republic of Korea (abbreviated as DPRK, PRK, DPR Korea, or Korea DPR), is a country in East Asia constituting the northern part of the Korean Peninsula.

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Novaya Zemlya

Novaya Zemlya (p, lit. the new land), also known as Nova Zembla (especially in Dutch), is an archipelago in the Arctic Ocean in northern Russia and the extreme northeast of Europe, the easternmost point of Europe lying at Cape Flissingsky on the Northern island.

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Nuclear electromagnetic pulse

A nuclear electromagnetic pulse (commonly abbreviated as nuclear EMP, or NEMP) is a burst of electromagnetic radiation created by nuclear explosions.

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Nuclear fallout

Nuclear fallout, or simply fallout, is the residual radioactive material propelled into the upper atmosphere following a nuclear blast, so called because it "falls out" of the sky after the explosion and the shock wave have passed.

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Nuclear weapon

A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either fission (fission bomb) or from a combination of fission and fusion reactions (thermonuclear bomb).

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Nuclear weapon design

Nuclear weapon designs are physical, chemical, and engineering arrangements that cause the physics package of a nuclear weapon to detonate.

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Nuclear weapon yield

The explosive yield of a nuclear weapon is the amount of energy released when that particular nuclear weapon is detonated, usually expressed as a TNT equivalent (the standardized equivalent mass of trinitrotoluene which, if detonated, would produce the same energy discharge), either in kilotons (kt—thousands of tons of TNT), in megatons (Mt—millions of tons of TNT), or sometimes in terajoules (TJ).

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Nuclear weapons and the United Kingdom

In October 1952, the United Kingdom (UK) became the third country to independently develop and test nuclear weapons.

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Nuclear weapons of the United States

The United States was the first country to manufacture nuclear weapons and is the only country to have used them in combat, with the separate bombings of Hiroshima and Nagasaki in World War II.

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Operation Cresset

The United States's Cresset nuclear test series was a group of 22 nuclear tests conducted in 1977-1978.

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Operation Crossroads

Operation Crossroads was a pair of nuclear weapon tests conducted by the United States at Bikini Atoll in mid-1946.

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Operation Dominic

Operation Dominic was a series of 31 nuclear test explosions with a 38.1 Mt total yield conducted in 1962 by the United States in the Pacific.

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Outer space

Outer space, or just space, is the expanse that exists beyond the Earth and between celestial bodies.

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Outer Space Treaty

The Outer Space Treaty, formally the Treaty on Principles Governing the Activities of States in the Exploration and Use of Outer Space, including the Moon and Other Celestial Bodies, is a treaty that forms the basis of international space law.

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Pacific Ocean

The Pacific Ocean is the largest and deepest of Earth's oceanic divisions.

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Pacific Proving Grounds

The Pacific Proving Grounds was the name given by the United States government to a number of sites in the Marshall Islands and a few other sites in the Pacific Ocean at which it conducted nuclear testing between 1946 and 1962.

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Pakistan and weapons of mass destruction

Pakistan is one of nine states to possess nuclear weapons. Pakistan began development of nuclear weapons in January 1972 under Prime Minister Zulfikar Ali Bhutto, who delegated the program to the Chairman of the Pakistan Atomic Energy Commission (PAEC) Munir Ahmad Khan with a commitment to having the bomb ready by the end of 1976. Since PAEC, consisting of over twenty laboratories and projects under nuclear engineer Munir Ahmad Khan, was falling behind schedule and having considerable difficulty producing fissile material, Abdul Qadeer Khan was brought from Europe by Bhutto at the end of 1974. As pointed out by Houston Wood, Professor of Mechanical & Aerospace Engineering, University of Virginia, Charlottesville, in his article on gas centrifuges, "The most difficult step in building a nuclear weapon is the production of fissile material"; as such, this work in producing fissile material as head of the Kahuta Project was pivotal to Pakistan developing the capability to detonate a nuclear bomb by the end of 1984.Levy, Adrian and Catherine Scott-Clark, Deception: Pakistan, the United States, and the Secret Trade in Nuclear Weapons. New York. Walker Publishing Company. 1977: page 112. Print. The Kahuta Project started under the supervision of a coordination board that oversaw the activities of KRL and PAEC. The Board consisted of A G N Kazi (secretary general, finance), Ghulam Ishaq Khan (secretary general, defence), and Agha Shahi (secretary general, foreign affairs), and reported directly to Bhutto. Ghulam Ishaq Khan and General Tikka Khan appointed military engineer Major General Ali Nawab to the program. Eventually, the supervision passed to Lt General Zahid Ali Akbar Khan in President General Muhammad Zia-ul-Haq's Administration. Moderate uranium enrichment for the production of fissile material was achieved at KRL by April 1978. Pakistan's nuclear weapons development was in response to the loss of East Pakistan in 1971's Bangladesh Liberation War. Bhutto called a meeting of senior scientists and engineers on 20 January 1972, in Multan, which came to known as "Multan meeting". Bhutto was the main architect of this programme, and it was here that Bhutto orchestrated nuclear weapons programme and rallied Pakistan's academic scientists to build the atomic bomb in three years for national survival. At the Multan meeting, Bhutto also appointed Munir Ahmad Khan as chairman of PAEC, who, until then, had been working as director at the nuclear power and Reactor Division of the International Atomic Energy Agency (IAEA), in Vienna, Austria. In December 1972, Abdus Salam led the establishment of Theoretical Physics Group (TPG) as he called scientists working at ICTP to report to Munir Ahmad Khan. This marked the beginning of Pakistan's pursuit of nuclear deterrence capability. Following India's surprise nuclear test, codenamed Smiling Buddha in 1974, the first confirmed nuclear test by a nation outside the permanent five members of the United Nations Security Council, the goal to develop nuclear weapons received considerable impetus. Finally, on 28 May 1998, a few weeks after India's second nuclear test (Operation Shakti), Pakistan detonated five nuclear devices in the Ras Koh Hills in the Chagai district, Balochistan. This operation was named Chagai-I by Pakistan, the underground iron-steel tunnel having been long-constructed by provincial martial law administrator General Rahimuddin Khan during the 1980s. The last test of Pakistan was conducted at the sandy Kharan Desert under the codename Chagai-II, also in Balochistan, on 30 May 1998. Pakistan's fissile material production takes place at Nilore, Kahuta, and Khushab Nuclear Complex, where weapons-grade plutonium is refined. Pakistan thus became the seventh country in the world to successfully develop and test nuclear weapons. Although, according to a letter sent by A.Q. Khan to General Zia, the capability to detonate a nuclear bomb using highly enriched uranium as fissile material produced at KRL had been achieved by KRL in 1984.

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Partial Nuclear Test Ban Treaty

The Partial Test Ban Treaty (PTBT) is the abbreviated name of the 1963 Treaty Banning Nuclear Weapon Tests in the Atmosphere, in Outer Space and Under Water, which prohibited all test detonations of nuclear weapons except for those conducted underground.

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Peaceful nuclear explosion

Peaceful nuclear explosions (PNEs) are nuclear explosions conducted for non-military purposes.

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Pokhran

Pokhran (पोखरण) is a city and a municipality located in the Jaisalmer district of the Indian state of Rajasthan.

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Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization

The Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization, CTBTO Preparatory Commission or CTBTO Prep Com is an international organization based in Vienna, Austria, that is tasked with preparing the activities of the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO).

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Project Gnome

Project Gnome was the first nuclear test of Operation Plowshare and was the first continental nuclear weapon test since Trinity to be conducted outside of the Nevada Test Site.

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Project Plowshare

Project Plowshare was the overall United States program for the development of techniques to use nuclear explosives for peaceful construction purposes.

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Radiation Exposure Compensation Act

The United States Radiation Exposure Compensation Act (RECA) is a federal statute providing for the monetary compensation of people, including atomic veterans, who contracted cancer and a number of other specified diseases as a direct result of their exposure to atmospheric nuclear testing undertaken by the United States during the Cold War, or their exposure to radon gas and other radioactive isotopes while undertaking uranium mining, milling or the transportation of ore.

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Radioactive contamination

Radioactive contamination, also called radiological contamination, is the deposition of, or presence of radioactive substances on surfaces or within solids, liquids or gases (including the human body), where their presence is unintended or undesirable (from the International Atomic Energy Agency - IAEA - definition).

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Ras Koh Hills

The Ras Koh Hills is a range of granite hills forming part of the Sulaiman Mountain Range in the Chagai District in Pakistan's Balochistan province.

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RDS-1

The RDS-1 (РДС-1), also known as Izdeliye 501 (device 501) and First Lightning, was the nuclear bomb used in the Soviet Union's first nuclear weapon test.

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Reggane

Reggane (from Berber "Argan"; رقان) is a town and commune, and the capital of Reggane District, in Adrar Province, central Algeria.

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Russia

Russia (rɐˈsʲijə), officially the Russian Federation (p), is a country in Eurasia. At, Russia is the largest country in the world by area, covering more than one-eighth of the Earth's inhabited land area, and the ninth most populous, with over 144 million people as of December 2017, excluding Crimea. About 77% of the population live in the western, European part of the country. Russia's capital Moscow is one of the largest cities in the world; other major cities include Saint Petersburg, Novosibirsk, Yekaterinburg and Nizhny Novgorod. Extending across the entirety of Northern Asia and much of Eastern Europe, Russia spans eleven time zones and incorporates a wide range of environments and landforms. From northwest to southeast, Russia shares land borders with Norway, Finland, Estonia, Latvia, Lithuania and Poland (both with Kaliningrad Oblast), Belarus, Ukraine, Georgia, Azerbaijan, Kazakhstan, China, Mongolia and North Korea. It shares maritime borders with Japan by the Sea of Okhotsk and the U.S. state of Alaska across the Bering Strait. The East Slavs emerged as a recognizable group in Europe between the 3rd and 8th centuries AD. Founded and ruled by a Varangian warrior elite and their descendants, the medieval state of Rus arose in the 9th century. In 988 it adopted Orthodox Christianity from the Byzantine Empire, beginning the synthesis of Byzantine and Slavic cultures that defined Russian culture for the next millennium. Rus' ultimately disintegrated into a number of smaller states; most of the Rus' lands were overrun by the Mongol invasion and became tributaries of the nomadic Golden Horde in the 13th century. The Grand Duchy of Moscow gradually reunified the surrounding Russian principalities, achieved independence from the Golden Horde. By the 18th century, the nation had greatly expanded through conquest, annexation, and exploration to become the Russian Empire, which was the third largest empire in history, stretching from Poland on the west to Alaska on the east. Following the Russian Revolution, the Russian Soviet Federative Socialist Republic became the largest and leading constituent of the Union of Soviet Socialist Republics, the world's first constitutionally socialist state. The Soviet Union played a decisive role in the Allied victory in World War II, and emerged as a recognized superpower and rival to the United States during the Cold War. The Soviet era saw some of the most significant technological achievements of the 20th century, including the world's first human-made satellite and the launching of the first humans in space. By the end of 1990, the Soviet Union had the world's second largest economy, largest standing military in the world and the largest stockpile of weapons of mass destruction. Following the dissolution of the Soviet Union in 1991, twelve independent republics emerged from the USSR: Russia, Ukraine, Belarus, Kazakhstan, Uzbekistan, Armenia, Azerbaijan, Georgia, Kyrgyzstan, Moldova, Tajikistan, Turkmenistan and the Baltic states regained independence: Estonia, Latvia, Lithuania; the Russian SFSR reconstituted itself as the Russian Federation and is recognized as the continuing legal personality and a successor of the Soviet Union. It is governed as a federal semi-presidential republic. The Russian economy ranks as the twelfth largest by nominal GDP and sixth largest by purchasing power parity in 2015. Russia's extensive mineral and energy resources are the largest such reserves in the world, making it one of the leading producers of oil and natural gas globally. The country is one of the five recognized nuclear weapons states and possesses the largest stockpile of weapons of mass destruction. Russia is a great power as well as a regional power and has been characterised as a potential superpower. It is a permanent member of the United Nations Security Council and an active global partner of ASEAN, as well as a member of the G20, the Shanghai Cooperation Organisation (SCO), the Council of Europe, the Asia-Pacific Economic Cooperation (APEC), the Organization for Security and Co-operation in Europe (OSCE), and the World Trade Organization (WTO), as well as being the leading member of the Commonwealth of Independent States (CIS), the Collective Security Treaty Organization (CSTO) and one of the five members of the Eurasian Economic Union (EEU), along with Armenia, Belarus, Kazakhstan and Kyrgyzstan.

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Sahara

The Sahara (الصحراء الكبرى,, 'the Great Desert') is the largest hot desert and the third largest desert in the world after Antarctica and the Arctic.

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Seabed Arms Control Treaty

The Seabed Arms Control Treaty (or Seabed Treaty, formally the Treaty on the Prohibition of the Emplacement of Nuclear Weapons and Other Weapons of Mass Destruction on the Sea-Bed and the Ocean Floor and in the Subsoil thereof) is a multilateral agreement between the United States, Soviet Union (now Russia), United Kingdom, and 91 other countries banning the emplacement of nuclear weapons or "weapons of mass destruction" on the ocean floor beyond a 12-mile (22.2 km) coastal zone.

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Sedan (nuclear test)

Storax Sedan was a shallow underground nuclear test conducted in Area 10 of Yucca Flat at the Nevada National Security Site on July 6, 1962 as part of Operation Plowshare, a program to investigate the use of nuclear weapons for mining, cratering, and other civilian purposes.

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Seismology

Seismology (from Ancient Greek σεισμός (seismós) meaning "earthquake" and -λογία (-logía) meaning "study of") is the scientific study of earthquakes and the propagation of elastic waves through the Earth or through other planet-like bodies.

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Semipalatinsk Test Site

The Semipalatinsk Test Site (STS or Semipalatinsk-21), also known as "The Polygon", was the primary testing venue for the Soviet Union's nuclear weapons.

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South Australia

South Australia (abbreviated as SA) is a state in the southern central part of Australia.

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Southeast Asian Nuclear-Weapon-Free Zone Treaty

The Southeast Asian Nuclear-Weapon-Free Zone Treaty (SEANWFZ) or the Bangkok Treaty of 1995, is a nuclear weapons moratorium treaty between 10 Southeast Asian member-states under the auspices of the ASEAN: Brunei Darussalam, Cambodia, Indonesia, Laos, Malaysia, Myanmar, Philippines, Singapore, Thailand, and Viet Nam.

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Soviet Union

The Soviet Union, officially the Union of Soviet Socialist Republics (USSR) was a socialist state in Eurasia that existed from 1922 to 1991.

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START I

START (Strategic Arms Reduction Treaty) was a bilateral treaty between the United States of America and the Union of Soviet Socialist Republics (USSR) on the reduction and limitation of strategic offensive arms.

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START II

START II (Strategic Arms Reduction Treaty) was a bilateral treaty between the United States of America and Russia on the Reduction and Limitation of Strategic Offensive Arms.

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Strategic Arms Limitation Talks

The Strategic Arms Limitation Talks (SALT) were two rounds of bilateral conferences and corresponding international treaties involving the United States and the Soviet Union, the Cold War superpowers, on the issue of arms control.

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Strategic Offensive Reductions Treaty

The Treaty Between the United States of America and the Russian Federation on Strategic Offensive Reductions (SORT), also known as the Treaty of Moscow, was a strategic arms reduction treaty between the United States and Russia that was in force from June 2003 until February 2011 when it was superseded by the New START treaty.

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Subsidence crater

A subsidence crater is a hole or depression left on the surface of an area which has had an underground (usually nuclear) explosion.

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Supercomputer

A supercomputer is a computer with a high level of performance compared to a general-purpose computer.

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Test Readiness Program

The Test Readiness Program was a United States Government program established in 1963 to maintain the necessary technologies and infrastructure for the atmospheric testing of nuclear weapons, should the treaty which prohibited such testing be abrogated.

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Thermonuclear weapon

A thermonuclear weapon is a second-generation nuclear weapon design using a secondary nuclear fusion stage consisting of implosion tamper, fusion fuel, and spark plug which is bombarded by the energy released by the detonation of a primary fission bomb within, compressing the fuel material (tritium, deuterium or lithium deuteride) and causing a fusion reaction.

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Threshold Test Ban Treaty

The Treaty on the Limitation of Underground Nuclear Weapon Tests, also known as the Threshold Test Ban Treaty (TTBT), was signed in July 1974 by the United States and Soviet Union.

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Thyroid cancer

Thyroid cancer is cancer that develops from the tissues of the thyroid gland.

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TNT

Trinitrotoluene (TNT), or more specifically 2,4,6-trinitrotoluene, is a chemical compound with the formula C6H2(NO2)3CH3.

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TNT equivalent

TNT equivalent is a convention for expressing energy, typically used to describe the energy released in an explosion.

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Totskoye nuclear exercise

The Totskoye nuclear exercise was a military exercise undertaken by the Soviet Army to explore defensive and offensive warfare during nuclear war.

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Treaty of Rarotonga

The Treaty of Rarotonga is the common name for the South Pacific Nuclear Free Zone Treaty, which formalises a Nuclear-Weapon-Free Zone in the South Pacific.

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Treaty of Tlatelolco

The Treaty of Tlatelolco is the conventional name given to the Treaty for the Prohibition of Nuclear Weapons in Latin America and the Caribbean.

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Treaty on Conventional Armed Forces in Europe

The original Treaty on Conventional Armed Forces in Europe (CFE) was negotiated and concluded during the last years of the Cold War and established comprehensive limits on key categories of conventional military equipment in Europe (from the Atlantic to the Urals) and mandated the destruction of excess weaponry.

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Treaty on Open Skies

The Treaty on Open Skies entered into force on January 1, 2002, and currently has 34 party states.

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Treaty on the Non-Proliferation of Nuclear Weapons

The Treaty on the Non-Proliferation of Nuclear Weapons, commonly known as the Non-Proliferation Treaty or NPT, is an international treaty whose objective is to prevent the spread of nuclear weapons and weapons technology, to promote cooperation in the peaceful uses of nuclear energy, and to further the goal of achieving nuclear disarmament and general and complete disarmament.

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Trinity (nuclear test)

Trinity was the code name of the first detonation of a nuclear weapon.

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Trinity and Beyond

Trinity and Beyond: The Atomic Bomb Movie is a 1995 American documentary film directed by Peter Kuran and narrated by William Shatner.

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Tsar Bomba

Tsar Bomba was the Western nickname for the Soviet RDS-220 hydrogen bomb (code name Ivan or Vanya), the most powerful nuclear weapon ever created.

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Turkmenistan

Turkmenistan (or; Türkmenistan), (formerly known as Turkmenia) is a sovereign state in Central Asia, bordered by Kazakhstan to the northwest, Uzbekistan to the north and east, Afghanistan to the southeast, Iran to the south and southwest, and the Caspian Sea to the west.

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Ukraine

Ukraine (Ukrayina), sometimes called the Ukraine, is a sovereign state in Eastern Europe, bordered by Russia to the east and northeast; Belarus to the northwest; Poland, Hungary, and Slovakia to the west; Romania and Moldova to the southwest; and the Black Sea and Sea of Azov to the south and southeast, respectively.

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Underground nuclear weapons testing

Underground nuclear testing is the test detonation of nuclear weapons that is performed underground.

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Underwater explosion

An underwater explosion (also known as an UNDEX) is a chemical or nuclear explosion that occurs under the surface of a body of water.

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Universal Time

Universal Time (UT) is a time standard based on Earth's rotation.

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Uzbekistan

Uzbekistan, officially also the Republic of Uzbekistan (Oʻzbekiston Respublikasi), is a doubly landlocked Central Asian Sovereign state.

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Vela Incident

The Vela Incident, also known as the South Atlantic Flash, was an unidentified double flash of light detected by an American Vela Hotel satellite on 22 September 1979 near the Prince Edward Islands off Antarctica.

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Vela Uniform

Vela Uniform was an element of Project Vela conducted jointly by the United States Department of Energy and the Advanced Research Projects Agency.

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Xinjiang

Xinjiang Uyghur Autonomous Region (شىنجاڭ ئۇيغۇر ئاپتونوم رايونى; SASM/GNC: Xinjang Uyĝur Aptonom Rayoni; p) is a provincial-level autonomous region of China in the northwest of the country.

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1958 US–UK Mutual Defence Agreement

The 1958 US–UK Mutual Defense Agreement, or UK–US Mutual Defence Agreement, is a bilateral treaty between the United States and the United Kingdom on nuclear weapons cooperation.

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2017 North Korean nuclear test

North Korea conducted its sixth nuclear test on 3 September 2017, stating it had tested a thermonuclear weapon (hydrogen bomb).

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2017–18 North Korea crisis

The 2017–18 North Korean crisis refers to the period when, in 2017, North Korea conducted a series of missile and nuclear tests that demonstrated the country's ability to launch ballistic missiles beyond its immediate region and suggested that North Korea's nuclear weapons capability was developing at a faster rate than had been assessed by the U.S. intelligence community.

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Atmospheric nuclear testing, Atomic test, Atomic testing, Atomic tests, Nuclear Test, Nuclear Tests, Nuclear cold test, Nuclear test, Nuclear test explosion, Nuclear test site, Nuclear test town, Nuclear testing, Nuclear testing in space, Nuclear tests, Nuclear weapon test, Nuclear weapon testing, Nuclear weapon tests, Nuclear weapons test, Nuclear weapons tests, Subcritical testing, Testing of nuclear weapons, Underground nuclear explosion, Underground testing, Underwater nuclear testing.

References

[1] https://en.wikipedia.org/wiki/Nuclear_weapons_testing

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