Area 1 (Nevada National Security Site)
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The Nevada National Security Sites (N2S2 or NNSS), popularized as the Nevada Test Site (NTS) until 2010, is a reservation of the
United States Department of Energy The United States Department of Energy (DOE) is an executive department of the U.S. federal government that oversees U.S. national energy policy and energy production, the research and development of nuclear power, the military's nuclear w ...
located in the southeastern portion of
Nye County Nye County is a county in the U.S. state of Nevada. As of the 2020 census, the population was 51,591. Its county seat is Tonopah. At , Nye is Nevada's largest county by area and the third-largest county in the contiguous United States, beh ...
, Nevada, about northwest of the city of
Las Vegas Las Vegas, colloquially referred to as Vegas, is the most populous city in the U.S. state of Nevada and the county seat of Clark County. The Las Vegas Valley metropolitan area is the largest within the greater Mojave Desert, and second-l ...
. Formerly known as the Nevada Proving Grounds of the
United States Army The United States Army (USA) is the primary Land warfare, land service branch of the United States Department of Defense. It is designated as the Army of the United States in the United States Constitution.Article II, section 2, clause 1 of th ...
, the site was acquired in 1951 to be the testing venue for the American nuclear devices. The first atmospheric test was conducted at the site's
Frenchman Flat Frenchman Flat is a hydrographic basin in the Nevada National Security Site south of Yucca Flat and north of Mercury, Nevada. The flat was used as an American nuclear test site and has a dry lake bed (Frenchman Lake) that was used as a 1950 ...
area by the
United States Atomic Energy Commission The United States Atomic Energy Commission (AEC) was an agency of the United States government established after World War II by the U.S. Congress to foster and control the peacetime development of atomic science and technology. President Harry ...
(USAEC) on January 27, 1951. About 928
nuclear tests Nuclear weapons tests are experiments carried out to determine the performance of nuclear weapons and the effects of Nuclear explosion, their explosion. Nuclear testing is a sensitive political issue. Governments have often performed tests to si ...
were conducted here through 1994, when the United States stopped its underground nuclear testing. The site consists of about of desert and mountainous terrain. Some 1,100 buildings in 28 areas are connected by of paved roads, of unpaved roads, ten
heliports A heliport is a small airport which has a helipad, suitable for use by helicopters, Powered lift, powered lift, and various types of VTOL, vertical lift aircraft. Designated heliports typically contain one or more touchdown and liftoff area ...
, and two airstrips. The site is privately managed and operated by Mission Support and Test Services LLC, a
joint venture A joint venture (JV) is a business entity created by two or more parties, generally characterized by shared ownership, shared returns and risks, and shared governance. Companies typically pursue joint ventures for one of four reasons: to acce ...
of
Honeywell Honeywell International Inc. is an American publicly traded, multinational conglomerate corporation headquartered in Charlotte, North Carolina. It primarily operates in four areas of business: aerospace, building automation, industrial automa ...
,
Jacobs Jacobs may refer to: Businesses and organisations *Jacob's, a brand name for several lines of biscuits and crackers in Ireland and the UK * Jacobs (coffee), a German brand of coffee * Jacobs Solutions, an American international technical professi ...
, and
Huntington Ingalls Huntington Ingalls Industries, Inc. (HII) is the largest military shipbuilding company in the United States as well as a provider of professional services to partners in government and industry. HII, ranked No. 375 on the Fortune 500, was formed ...
, on behalf of the
National Nuclear Security Administration The National Nuclear Security Administration (NNSA) is a United States federal agency responsible for safeguarding national security through the military application of nuclear science. NNSA maintains and enhances the safety, security, and ef ...
(NNSA). The
mushroom cloud A mushroom cloud is a distinctive mushroom-shaped flammagenitus cloud of debris, smoke, and usually condensed water vapour resulting from a large explosion. The effect is most commonly associated with a nuclear explosion, but any sufficiently e ...
s from the 100 atmospheric tests were visible from almost away; they could be seen from the
Las Vegas Strip The Las Vegas Strip is a stretch of Las Vegas Boulevard in Clark County, Nevada, that is known for its concentration of resort hotels and casinos. The Strip, as it is known, is about long, and is immediately south of the Las Vegas city limits ...
in the early 1950s. Many iconic images at nuclear science museums throughout the United States come from the site.
Las Vegas Las Vegas, colloquially referred to as Vegas, is the most populous city in the U.S. state of Nevada and the county seat of Clark County. The Las Vegas Valley metropolitan area is the largest within the greater Mojave Desert, and second-l ...
experienced noticeable
seismic Seismology (; from Ancient Greek σεισμός (''seismós'') meaning "earthquake" and -λογία (''-logía'') meaning "study of") is the scientific study of earthquakes (or generally, quakes) and the generation and propagation of elastic ...
effects. Westerly winds routinely carried the
fallout Nuclear fallout is residual radioactive material that is created by the reactions producing a nuclear explosion. It is initially present in the radioactive cloud created by the explosion, and "falls out" of the cloud as it is moved by the ...
from atmospheric nuclear tests, increasing
cancer Cancer is a group of diseases involving Cell growth#Disorders, abnormal cell growth with the potential to Invasion (cancer), invade or Metastasis, spread to other parts of the body. These contrast with benign tumors, which do not spread. Po ...
in
Utah Utah is a landlocked state in the Mountain states, Mountain West subregion of the Western United States. It is one of the Four Corners states, sharing a border with Arizona, Colorado, and New Mexico. It also borders Wyoming to the northea ...
and elsewhere, according to a 1984 medical report.Falk, Jim (1982). ''Global Fission:The Battle Over Nuclear Power'', p. 134. The site has hosted 536 publicized and organized
anti-nuclear protests Anti-nuclear protests began on a small scale in the U.S. as early as 1946 in response to Operation Crossroads. Large scale anti-nuclear protests first emerged in the mid-1950s in Japan in the wake of the March 1954 Lucky Dragon Incident. Au ...
, with 37,488 participants and 15,740 involved in arrests, according to government records.Western Shoshone spiritual leader dies
/ref>


History

The site was established as a area by President
Harry S. Truman Harry S. Truman (May 8, 1884December 26, 1972) was the 33rd president of the United States, serving from 1945 to 1953. As the 34th vice president in 1945, he assumed the presidency upon the death of Franklin D. Roosevelt that year. Subsequen ...
on December 18, 1950, within the
Nellis Air Force Gunnery and Bombing Range The Nevada Test and Training Range (NTTR) is one of two military training areas at the Nellis Air Force Base Complex in Nevada and used by the United States Air Force Warfare Center at Nellis Air Force Base. The NTTR land area includes a "simu ...
.


1951–1992

The site was the primary testing location of American nuclear devices from 1951 to 1992; 928 announced nuclear tests occurred there. Of those, 828 were undergroundU.S. Department of Energy / Nevada Operations Office, ''United States Nuclear Tests – July 1945 through September 1992'', December 2000
DOE/NV-209 Rev 15
(62 of the underground tests included multiple, simultaneous nuclear detonations, adding 93 detonations and bringing the total number of NTS nuclear detonations to 1,021, of which 921 were underground). The site contains many
subsidence crater __NOTOC__ A subsidence crater is a hole or depression left on the surface of an area which has had an underground (usually nuclear) explosion. Many such craters are commonly present at bomb testing areas; one notable example is the Nevada Test S ...
s from the testing. The site was the United States' primary location for tests smaller than . One hundred twenty-six tests were conducted elsewhere, including most larger tests. Many of these occurred at the
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. The U.S. tested ...
in the
Marshall Islands The Marshall Islands, officially the Republic of the Marshall Islands, is an island country west of the International Date Line and north of the equator in the Micronesia region of the Northwestern Pacific Ocean. The territory consists of 29 c ...
. During the 1950s, the
mushroom cloud A mushroom cloud is a distinctive mushroom-shaped flammagenitus cloud of debris, smoke, and usually condensed water vapour resulting from a large explosion. The effect is most commonly associated with a nuclear explosion, but any sufficiently e ...
s from atmospheric tests could be seen for almost . The city of Las Vegas experienced noticeable seismic effects, and the distant mushroom clouds, which could be seen from the downtown hotels, became tourist attractions. The last atmospheric test detonation at the site was "
Little Feller I Little Feller II and Little Feller I were code names for a set of nuclear tests undertaken by the United States at the Nevada Test Site on July 7 and 17, 1962 as part of Operation Sunbeam. They were both tests of stockpiled W54 warheads, the sm ...
" of
Operation Sunbeam Operation Sunbeam (also known as Operation Dominic II)DOMINIC II Fact Shee ...
, on July 17, 1962. Although the United States did not ratify the
Comprehensive Nuclear-Test-Ban Treaty The Comprehensive Nuclear-Test-Ban Treaty (CTBT) is a multilateral treaty to ban nuclear weapons test explosions and any other nuclear explosions, for both civilian and military purposes, in all environments. It was adopted by the United Nati ...
, it honors the articles of the treaty, and underground testing of weapons ended as of September 23, 1992. Subcritical tests not involving a
critical mass In nuclear engineering, critical mass is the minimum mass of the fissile material needed for a sustained nuclear chain reaction in a particular setup. The critical mass of a fissionable material depends upon its nuclear properties (specific ...
continued. One notable test shot was the " Sedan" shot of
Operation Storax Operation Storax was a series of 47 nuclear tests conducted by the United States in 1962–1963 at the Nevada Test Site. These tests followed the ''Operation Fishbowl'' series and preceded the ''Operation Roller Coaster'' series. British test ...
on July 6, 1962, a shot for
Operation Plowshare Project Plowshare was the overall United States program for the development of techniques to use nuclear explosives for peaceful construction purposes. The program was organized in June 1957 as part of the worldwide Atoms for Peace efforts. A ...
, which sought to prove that nuclear weapons could be used for peaceful means in creating bays or canals. It created a crater 1,280 feet (390 m) wide and 320 feet (100 m) deep.


1992–present

More than 27 subcritical tests have been conducted at the site. In 2018, the State of Nevada sued the federal government to block a plan to ship "more than a metric ton" of plutonium to the site for temporary storage. In 2022, the government acknowledged that 13,625 cubic meters of radioactive material conforming to its disposal criteria had been shipped to the site for disposal.


Destruction and survivability testing

Testing of the various effects of detonation of nuclear weapons was carried out during above-ground tests. Many kinds of vehicles (ranging from cars to aircraft), nuclear-fallout and standard bomb-shelters, public-utility stations and other building structures and equipment were placed at measured distances away from "ground zero", the spot on the surface immediately under or over the center of the blast. Operation Cue tested
civil defense Civil defense or civil protection is an effort to protect the citizens of a state (generally non-combatants) from human-made and natural disasters. It uses the principles of emergency management: Risk management, prevention, mitigation, prepara ...
measures. Such civilian and commercial effects testing was done with many of the atomic tests of
Operation Greenhouse Operation Greenhouse was the fifth American nuclear test series, the second conducted in 1951 and the first to test principles that would lead to developing Teller-Ullam, thermonuclear weapons (''hydrogen bombs''). Conducted at the new Pacific ...
on
Eniwetok Atoll Enewetak Atoll (; also spelled Eniwetok Atoll or sometimes Eniewetok; , , or , ; known to the Japanese as Brown Atoll or Brown Island; ) is a large coral atoll of 40 islands in the Pacific Ocean and with its 296 people (as of 2021) forms a leg ...
, Operation Upshot-Knothole and
Operation Teapot Operation Teapot was a series of 14 nuclear test explosions conducted at the Nevada Test Site in the first half of 1955. It was preceded by ''Operation Castle'', and followed by ''Operation Wigwam''. ''Wigwam'' was, administratively, a part of ...
at the site. Homes and commercial buildings of many different types and styles were built to standards typical of American and (less-often) European cities. Other such structures included military fortifications (of types used by both
NATO The North Atlantic Treaty Organization (NATO ; , OTAN), also called the North Atlantic Alliance, is an intergovernmental organization, intergovernmental Transnationalism, transnational military alliance of 32 Member states of NATO, member s ...
and the Soviet-led
Warsaw Pact The Warsaw Pact (WP), formally the Treaty of Friendship, Co-operation and Mutual Assistance (TFCMA), was a Collective security#Collective defense, collective defense treaty signed in Warsaw, Polish People's Republic, Poland, between the Sovi ...
) and civil-defense as well as "backyard"-type shelters. In such a typical test, several of the same buildings and structures might be built using the same layouts and plans with different types of materials, paints, general landscaping, cleanliness of the surrounding yards, wall-angles or varying distances from ground zero. Mannequins were placed in and around the test vehicles and buildings, aside from some left out in the open, for testing clothing and shock effects. High-speed cameras were placed in protected locations to capture effects of radiation and shock waves. Typical imagery from these cameras shows paint boiling off the buildings, which are then pushed violently away from ground zero by the shock wave before being drawn toward the detonation by the suction caused by the climbing mushroom cloud. Footage from these cameras has become iconic, used in various media and available in the public domain. This testing allowed the development of Civil Defense guidelines, distributed to the public, to increase the likelihood of survival in case of air- or spaceborne nuclear attack.


Environmental impact

Each of the below-ground explosions—some as deep as 5,000 feet (1.5 km)—vaporized a large chamber, leaving a cavity filled with
radioactive Radioactive decay (also known as nuclear decay, radioactivity, radioactive disintegration, or nuclear disintegration) is the process by which an unstable atomic nucleus loses energy by radiation. A material containing unstable nuclei is conside ...
rubble. About a third of the tests were conducted directly in
aquifer An aquifer is an underground layer of water-bearing material, consisting of permeability (Earth sciences), permeable or fractured rock, or of unconsolidated materials (gravel, sand, or silt). Aquifers vary greatly in their characteristics. The s ...
s, and others were hundreds or thousands of feet below the
water table The water table is the upper surface of the phreatic zone or zone of saturation. The zone of saturation is where the pores and fractures of the ground are saturated with groundwater, which may be fresh, saline, or brackish, depending on the loc ...
.Ralph Vartabedian
Nuclear scars: Tainted water runs beneath Nevada desert
''Los Angeles Times'', November 13, 2009.
When underground explosions ended in 1992, the Department of Energy estimated that more than of radioactivity remained in the environment at that time, making the site one of the most contaminated locations in the United States. In the most seriously affected zones, the concentration of radioactivity in groundwater reaches millions of picocuries per liter. (The federal standard for drinking water is 20 picocuries per liter (0.74 Bq/L).) Although radioactivity levels in the water continue to decline over time, the longer-lived isotopes like plutonium or uranium could pose risks for thousands of years. The Department of Energy has more than 48 monitoring wells at the site. Because the contaminated water poses no immediate health threat, the department ranked the site as low priority for clean-up. In 2009,
tritium Tritium () or hydrogen-3 (symbol T or H) is a rare and radioactive isotope of hydrogen with a half-life of ~12.33 years. The tritium nucleus (t, sometimes called a ''triton'') contains one proton and two neutrons, whereas the nucleus of the ...
with a half-life of 12.3 years was first detected in groundwater off-site in
Pahute Mesa Pahute Mesa or Paiute Mesa is one of four major nuclear test regions within the Nevada National Security Site (NNSS). It occupies in the northwest corner of the NNSS in Nevada. The eastern section is known as Area 19 and the western section as ...
, near the locations of the 1968 Benham and 1975 Tybo tests. The DOE issues an annual
environmental monitoring Environmental monitoring is the processes and activities that are done to characterize and describe the state of the environment. It is used in the preparation of environmental impact assessments, and in many circumstances in which human activit ...
report containing data from the monitoring wells both on and off site. Janice C. Beatley started to study the botany of the Nevada test site in 1962 when she created 68 study sites. The intention had been to study the effect of radiation on the plants but this plan had to be changed when the United States abandoned atmospheric testing in 1963. The sites however became important because they recorded long term change through 1980. Much of her data was never published; however it was all transferred to the
United States Geological Survey The United States Geological Survey (USGS), founded as the Geological Survey, is an agency of the U.S. Department of the Interior whose work spans the disciplines of biology, geography, geology, and hydrology. The agency was founded on Mar ...
after her death. It was "an ideal place to conduct long-term ecosystem research."


Protests and demonstrations

In 1983, four Greenpeace activists made the first incursion into the site of an active test. Two American men, one from West Germany and one from the United Kingdom hiked 30 miles on foot to hide in the desert near ground zero at Yucca Flats. The four evaded capture for a week with the stated objective of delaying the test, and were charged with trespassing. From 1986 through 1994, two years after the United States ended nuclear weapons testing, 536 demonstrations were held at the site involving 37,488 participants and 15,740 arrests, according to government records. In 1986, a coalition of organizations including Greenpeace sent protestors into Frenchman's Flat. On February 5, 1987, more than 400 people were arrested trying to enter the site after nearly 2,000 demonstrators held a rally to protest nuclear weapons testing. Those arrested included the astronomer
Carl Sagan Carl Edward Sagan (; ; November 9, 1934December 20, 1996) was an American astronomer, planetary scientist and science communicator. His best known scientific contribution is his research on the possibility of extraterrestrial life, including e ...
and the actors
Kris Kristofferson Kristoffer Kristofferson (June 22, 1936 – September 28, 2024) was an American singer, songwriter, and actor. He was a pioneering figure in the outlaw country movement of the 1970s, moving away from the polished Nashville sound and toward a m ...
,
Martin Sheen Ramón Gerard Antonio Estévez (born August 3, 1940), known professionally as Martin Sheen, is an American actor. His work spans over six decades of television and film, and his accolades include three Emmy Awards, a Golden Globe Award, and ...
, and
Robert Blake Robert Blake (or variants) may refer to: Sports * Bob Blake (American football) (1885–1962), American football player * Robbie Blake (born 1976), English footballer * Bob Blake (ice hockey) (1914–2008), American ice hockey player * Rob Blake ...
. Five Democratic members of Congress attended the rally:
Thomas J. Downey Thomas Joseph Downey (born January 28, 1949) is an American attorney, lobbyist and former politician who served as a U.S. Representative for New York's 2nd congressional district from 1975 to 1993. Early life and education Downey was born in Que ...
,
Mike Lowry Michael Edward Lowry (March 8, 1939 – May 1, 2017) was an American politician who served as the 20th governor of Washington from 1993 to 1997. His political career ended when his deputy press secretary, Susanne Albright, made accusations of ...
, Jim Bates, Leon E. Panetta, and
Barbara Boxer Barbara Sue Boxer (née Levy; born November 11, 1940) is a retired American politician, lobbyist, and former reporter who served in the United States Senate, representing California from 1993 to 2017. A member of the Democratic Party (United St ...
.Robert Lindsey
438 Protesters are Arrested at Nevada Nuclear Test Site
''New York Times'', February 6, 1987.
American Peace Test (APT) and Nevada Desert Experience (NDE) held most of these. In March 1988, APT held an event where more than 8,000 people attended a ten-day action to "Reclaim the Test Site", where nearly 3,000 people were arrested, including more than 1,200 in one day. This set a record for most civil disobedience arrests in a single protest. On October 12, 1992, an 11-day protest took place at the Test Site. At the invitation of the Western Shoshone Tribe and
Corbin Harney Corbin Harney (March 24, 1920 – July 10, 2007) was an elder and spiritual leader of the Newe ( Western Shoshone) people. Harney reportedly inspired the creation in 1994 of the Shundahai Network, which works for environmental justice and nuclea ...
, an anti-nuclear activist and spiritual leader for the Newe people, over 2,000 protesters from 12 different countries gathered for "Healing Global Wounds". In their media work, protesters and organizers demanded an end to nuclear weapons testing and return of the test site to the Western Shoshone people. Camped in the desert, participants took part in anti-racism and peaceful civil disobedience trainings. They planned actions and demonstrations, eventually using culverts and other means to enter the Test Site where 530 were arrested by
Wackenhut G4S Secure Solutions (USA) is an American/British-based security services company, and a subsidiary of G4S plc. It was founded as The Wackenhut Corporation in 1954, in Coral Gables, Florida, by George Wackenhut and three partners (all former ...
Security forces on charges of trespassing. Full-scale nuclear weapons testing did not resume. After 1994, Shundahai Network in cooperation with
Nevada Desert Experience Nevada Desert Experience is a name for the movement to stop U.S. nuclear weapons testing that came into use in the middle 1980s. It is also the name of an anti-nuclear organization which continues to create public events to question the morality ...
and
Corbin Harney Corbin Harney (March 24, 1920 – July 10, 2007) was an elder and spiritual leader of the Newe ( Western Shoshone) people. Harney reportedly inspired the creation in 1994 of the Shundahai Network, which works for environmental justice and nuclea ...
continued the protests of the work at the site and staged efforts to stop a repository for highly
radioactive waste Radioactive waste is a type of hazardous waste that contains radioactive material. It is a result of many activities, including nuclear medicine, nuclear research, nuclear power generation, nuclear decommissioning, rare-earth mining, and nuclear ...
adjacent to the test site at nearby
Yucca Mountain Yucca Mountain is a mountain in Nevada, near its border with California, approximately northwest of Las Vegas. Located in the Great Basin, Yucca Mountain is east of the Amargosa Desert, south of the Nevada Test and Training Range and in the ...
.


Modern usage

The site continues to be used for nuclear weapons research and development. This includes subcritical testing. These tests are conducted jointly by
Los Alamos National Laboratory Los Alamos National Laboratory (often shortened as Los Alamos and LANL) is one of the sixteen research and development Laboratory, laboratories of the United States Department of Energy National Laboratories, United States Department of Energy ...
,
Lawrence Livermore National Laboratory Lawrence Livermore National Laboratory (LLNL) is a Federally funded research and development centers, federally funded research and development center in Livermore, California, United States. Originally established in 1952, the laboratory now i ...
, and the British
Atomic Weapons Establishment } The Atomic Weapons Establishment (AWE) is a United Kingdom Ministry of Defence research facility responsible for the design, manufacture and support of warheads for the UK's nuclear weapons. It is the successor to the Atomic Weapons Researc ...
. A recent one was ''Ediza'' (2019), and ''Nightshade A'' (2020). The site offers monthly public tours, often booked months in advance. Visitors are not allowed to bring cameras, binoculars, or cell phones, nor are they permitted to pick up rocks for souvenirs. While there are no longer any explosive tests of nuclear weapons at the site, there is still testing done to determine the viability of the United States' aging nuclear arsenal. Additionally, the site is the location of the Area 5 Radioactive Waste Management Complex, which sorts and stores low-level
radioactive waste Radioactive waste is a type of hazardous waste that contains radioactive material. It is a result of many activities, including nuclear medicine, nuclear research, nuclear power generation, nuclear decommissioning, rare-earth mining, and nuclear ...
that is not
transuranic The transuranium (or transuranic) elements are the chemical elements with atomic number greater than 92, which is the atomic number of uranium. All of them are radioactively unstable and decay into other elements. Except for neptunium and pluton ...
and has a half life of less than 20 years. The Radiological/Nuclear WMD Incident Exercise Site (T-1) replicates multiple terrorist radiological incidents with train, plane, automobile, truck, and helicopter props. It is located in Area 1, at the former site of tests EASY, SIMON, APPLE-2, and GALILEO.


Landmarks and geography

A table of interesting places in and around the NNSS is presented here, which corresponds with many of the descriptions in the Nevada Test Site Guide.


Cancer and test site

Many communities east of the Nevada Test Site, including
Cedar City Cedar City is the largest city in Iron County, Utah, United States. Located south of Salt Lake City, it is north of Las Vegas on Interstate 15 in Utah, Interstate 15. Southern Utah University is located in Cedar City. It is the home of the Ut ...
,
Enterprise Enterprise (or the archaic spelling Enterprize) may refer to: Business and economics Brands and enterprises * Enterprise GP Holdings, an energy holding company * Enterprise plc, a UK civil engineering and maintenance company * Enterpris ...
, and
St. George, Utah St. George or Saint George is a city in and the county seat of Washington County, Utah, United States. Located in southwestern Utah on the Arizona border, it is the principal city of the St. George metropolitan statistical area (MSA). The cit ...
, received fallout from above-ground
nuclear testing Nuclear weapons tests are experiments carried out to determine the performance of nuclear weapons and the effects of Nuclear explosion, their explosion. Nuclear testing is a sensitive political issue. Governments have often performed tests to si ...
in the
Yucca Flats Yucca Flat is a closed desert drainage basin, one of four major nuclear test regions within the Nevada Test Site (NTS), and is divided into nine test sections: Areas 1 through 4 and 6 through 10. Yucca Flat is located at the eastern edge of NTS, ...
at the site. Winds routinely carried the fallout of these tests directly through St. George and southern Utah. Marked increases in
cancer Cancer is a group of diseases involving Cell growth#Disorders, abnormal cell growth with the potential to Invasion (cancer), invade or Metastasis, spread to other parts of the body. These contrast with benign tumors, which do not spread. Po ...
s such as
leukemia Leukemia ( also spelled leukaemia; pronounced ) is a group of blood cancers that usually begin in the bone marrow and produce high numbers of abnormal blood cells. These blood cells are not fully developed and are called ''blasts'' or '' ...
,
lymphoma Lymphoma is a group of blood and lymph tumors that develop from lymphocytes (a type of white blood cell). The name typically refers to just the cancerous versions rather than all such tumours. Signs and symptoms may include enlarged lymph node ...
,
thyroid cancer Thyroid cancer is cancer that develops from the tissues of the thyroid gland. It is a disease in which cells grow abnormally and have the potential to spread to other parts of the body. Symptoms can include swelling or a lump in the neck, ...
,
breast cancer Breast cancer is a cancer that develops from breast tissue. Signs of breast cancer may include a Breast lump, lump in the breast, a change in breast shape, dimpling of the skin, Milk-rejection sign, milk rejection, fluid coming from the nipp ...
,
melanoma Melanoma is the most dangerous type of skin cancer; it develops from the melanin-producing cells known as melanocytes. It typically occurs in the skin, but may rarely occur in the mouth, intestines, or eye (uveal melanoma). In very rare case ...
,
bone cancer A bone tumor is an neoplastic, abnormal growth of tissue in bone, traditionally classified as benign, noncancerous (benign) or malignant, cancerous (malignant). Cancerous bone tumors usually originate from a cancer in another part of the body su ...
,
brain tumor A brain tumor (sometimes referred to as brain cancer) occurs when a group of cells within the Human brain, brain turn cancerous and grow out of control, creating a mass. There are two main types of tumors: malignant (cancerous) tumors and benign ...
s, and gastrointestinal tract cancers were reported from the mid-1950s through 1980. On May 19, 1953, the 32-
kiloton TNT equivalent is a convention for expressing energy, typically used to describe the energy released in an explosion. A ton of TNT equivalent is a unit of energy defined by convention to be (). It is the approximate energy released in the det ...
(130 TJ) atomic bomb (nicknamed "Harry") was detonated at the site. The bomb later gained the name "
Dirty Harry ''Dirty Harry'' is a 1971 American action-thriller film produced and directed by Don Siegel, the first in the Dirty Harry (film series), ''Dirty Harry'' series. Clint Eastwood plays the title role, in his first appearance as San Francisco Polic ...
" because of the amount of off-site
fallout Nuclear fallout is residual radioactive material that is created by the reactions producing a nuclear explosion. It is initially present in the radioactive cloud created by the explosion, and "falls out" of the cloud as it is moved by the ...
generated by the bomb. A 1962
United States Atomic Energy Commission The United States Atomic Energy Commission (AEC) was an agency of the United States government established after World War II by the U.S. Congress to foster and control the peacetime development of atomic science and technology. President Harry ...
report found that "children living in St. George, Utah may have received doses to the
thyroid The thyroid, or thyroid gland, is an endocrine gland in vertebrates. In humans, it is a butterfly-shaped gland located in the neck below the Adam's apple. It consists of two connected lobes. The lower two thirds of the lobes are connected by ...
of
radioiodine There are 40 known isotopes of iodine (53I) from 108I to 147I; all undergo radioactive decay except 127I, which is stable. Iodine is thus a monoisotopic element. Its longest-lived radioactive isotope, 129I, has a half-life of 16.14 million ye ...
as high as 120 to 440 rads" (1.2 to 4.4 Gy).Pat Ortmeyer and Arjun Makhijani.
Let Them Drink Milk
," '' The Bulletin of the Atomic Scientists'', November/December 1997, vi
IEER
. Retrieved October 31, 2007.
A 1979 study reported in the ''
New England Journal of Medicine ''The New England Journal of Medicine'' (''NEJM'') is a weekly medical journal published by the Massachusetts Medical Society. Founded in 1812, the journal is among the most prestigious peer-reviewed medical journals. Its 2023 impact factor was ...
'' concluded that:
A significant excess of
leukemia Leukemia ( also spelled leukaemia; pronounced ) is a group of blood cancers that usually begin in the bone marrow and produce high numbers of abnormal blood cells. These blood cells are not fully developed and are called ''blasts'' or '' ...
deaths occurred in children up to 14 years of age living in Utah between 1959 and 1967. This excess was concentrated in the cohort of children born between 1951 and 1958, and was most pronounced in those residing in counties receiving high fallout.
In 1982, a lawsuit brought by nearly 1,200 people accused the government of negligence in atomic and/or nuclear weapons testing at the site, which they said had caused leukemia and other
cancer Cancer is a group of diseases involving Cell growth#Disorders, abnormal cell growth with the potential to Invasion (cancer), invade or Metastasis, spread to other parts of the body. These contrast with benign tumors, which do not spread. Po ...
s. Dr. Karl Z. Morgan, Director of Health Physics at
Oak Ridge National Laboratory Oak Ridge National Laboratory (ORNL) is a federally funded research and development centers, federally funded research and development center in Oak Ridge, Tennessee, United States. Founded in 1943, the laboratory is sponsored by the United Sta ...
, testified that radiation protection measures in the tests were substandard to best practices at the time. In a report by the
National Cancer Institute The National Cancer Institute (NCI) coordinates the United States National Cancer Program and 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. ...
, released in 1997, it was determined that 90 atmospheric tests at the site deposited high levels of
radioactive Radioactive decay (also known as nuclear decay, radioactivity, radioactive disintegration, or nuclear disintegration) is the process by which an unstable atomic nucleus loses energy by radiation. A material containing unstable nuclei is conside ...
iodine Iodine is a chemical element; it has symbol I and atomic number 53. The heaviest of the stable halogens, it exists at standard conditions as a semi-lustrous, non-metallic solid that melts to form a deep violet liquid at , and boils to a vi ...
-
131 131 may refer to: *131 (number) *AD 131 *131 BC *131 (album), the album by Emarosa *131 (MBTA bus), the Massachusetts Bay Transportation Authority bus. For the MBTA bus, see 131 (MBTA bus). *131 (New Jersey bus), the New Jersey Transit bus *131 Val ...
(5.5 exabecquerels) across much of the contiguous United States, especially in the years 1952, 1953, 1955, and 1957doses large enough, it claimed, to produce 10,000 to 75,000 cases of
thyroid cancer Thyroid cancer is cancer that develops from the tissues of the thyroid gland. It is a disease in which cells grow abnormally and have the potential to spread to other parts of the body. Symptoms can include swelling or a lump in the neck, ...
. The
Radiation Exposure Compensation Act The United States Radiation Exposure Compensation Act (RECA) is a federal statute implemented in 1990, set to expire in July 2024, providing for the monetary compensation of people, including atomic veterans, who contracted cancer and a number ...
of 1990 allowed for people living downwind of the site for at least two years in particular Nevada, Arizona, or Utah counties, between January 21, 1951, and October 31, 1958, or June 30 and July 31, 1962, and suffering from certain cancers or other serious illnesses deemed to have been caused by fallout exposure to receive compensation of $50,000. By 2014, over 28,000 downwinder claims for a total compensation of $1.9 billion had been processed. Additionally, the
Energy Employees Occupational Illness Compensation Program The Energy Employees Occupational Illness Compensation Program Act (EEOICPA) was passed by Congress in 2000 and is designed to compensate individuals who worked in nuclear weapons production and as a result of occupational exposures contracted certa ...
Act of 2000 provides compensation and medical benefits for nuclear weapons workers who may have developed certain work-related illnesses. Uranium miners, mill workers, and ore transporters are also eligible for $100,000 compassionate payment under the Radiation Exposure Compensation Program, while $75,000 is the fixed payment amount for workers who were participants in the above-ground nuclear weapons tests.


Nuclear test series carried out at the site

*
Operation Ranger Operation Ranger was the fourth American nuclear weapon, nuclear test series. It was conducted in 1951 and was the first series to be carried out at the Nevada Test Site. All the bombs were dropped by B-50 Superfortress, B-50D bombers and exp ...
– 1951 *
Operation Buster–Jangle Operation Buster–Jangle was a series of seven (six atmospheric, one Explosion crater, cratering) nuclear weapons tests conducted by the United States in late 1951 at the Nevada Test Site. ''Buster–Jangle'' was the first joint test program b ...
– 1951 *
Operation Tumbler–Snapper Operation Tumbler–Snapper was a series of nuclear weapons tests conducted by the United States in early 1952 at the Nevada Test Site. The ''Tumbler–Snapper'' series of tests followed ''Operation Buster–Jangle'' and preceded ''Operation Iv ...
– 1952 *
Operation Upshot–Knothole Operation Upshot–Knothole was a series of eleven nuclear test shots conducted in 1953 at the Nevada Test Site. It followed ''Operation Ivy'' and preceded ''Operation Castle''. Over 21,000 soldiers took part in the ground exercise Desert Roc ...
– 1953 *
Operation Teapot Operation Teapot was a series of 14 nuclear test explosions conducted at the Nevada Test Site in the first half of 1955. It was preceded by ''Operation Castle'', and followed by ''Operation Wigwam''. ''Wigwam'' was, administratively, a part of ...
– 1955 * Project 56 – 1955 *
Operation Plumbbob Operation Plumbbob was a series of nuclear tests that were conducted between May 28 and October 7, 1957, at the Nevada Test Site, following ''Project 57'', and preceding '' Project 58/58A''. Background The operation consisted of 29 explosions ...
– 1957 *
Project 57 Project 57 was an open-air nuclear test conducted by the United States at the Nellis Air Force Range in 1957, following Operation Redwing, and preceding Operation Plumbbob. The test area, also known as Area 13, was a by block of lan ...
, Project 58/58A – 1957–1958 *
Operation Hardtack II Operation Hardtack II was a series of 37 nuclear tests conducted by the United States in 1958 at the Nevada Test Site. These tests followed the ''Operation Argus'' series and preceded the ''Operation Nougat'' series. With test moratoriums on ...
– 1958 *
Operation Nougat Operation Nougat was a series of 44 nuclear tests conducted (with one exception) at the Nevada Test Site in 1961 and 1962, immediately after the Soviet Union abrogated a testing moratorium, with the US' ''Mink'' test shot taking place the day ...
– 1961–1962 *
Operation Plowshare Project Plowshare was the overall United States program for the development of techniques to use nuclear explosives for peaceful construction purposes. The program was organized in June 1957 as part of the worldwide Atoms for Peace efforts. A ...
– 1961–1973 (sporadic, at least one test a year) *
Operation Sunbeam Operation Sunbeam (also known as Operation Dominic II)DOMINIC II Fact Shee ...
(aka Dominic II) – 1962 *
Operation Storax Operation Storax was a series of 47 nuclear tests conducted by the United States in 1962–1963 at the Nevada Test Site. These tests followed the ''Operation Fishbowl'' series and preceded the ''Operation Roller Coaster'' series. British test ...
– 1963 *
Operation Niblick The United States's Niblick nuclear test series was a group of 41 nuclear tests conducted in 1963–1964. These tests A bomb test may be a salvo test, defined as two or more explosions "where a period of time between successive individual explo ...
– 1963–1964 *
Operation Whetstone The United States's Whetstone nuclear test series was a group of 46 nuclear test Nuclear weapons tests are experiments carried out to determine the performance of nuclear weapons and the effects of their explosion. Nuclear testing is a se ...
– 1964–1965 * Operation Flintlock – 1965–1966 *
Operation Latchkey Operation Latchkey was a series of 38 nuclear tests conducted by the United States in 1966–1967 at the Nevada Test Site. These tests followed the '' Operation Flintlock'' series and preceded the ''Operation Crosstie Operation Crosstie wa ...
– 1966–1967 *
Operation Crosstie Operation Crosstie was a series of 48 nuclear tests conducted by the United States in 1967–1968 at the Nevada Test Site. These tests followed the '' Operation Latchkey'' series and preceded the '' Operation Bowline'' series. Nuclear tests G ...
– 1967–1968 * Operation Bowline – 1968–1969 *
Operation Mandrel The United States's Mandrel nuclear test series was a group of 52 nuclear tests conducted in 1969–1970. These tests followed the '' Operation Bowline'' series and preceded the '' Operation Emery'' series. References {{US Nuclear Test ...
– 1969–1970 * Operation Emery – 1970 *
Operation Grommet The United States's Grommet nuclear test series was a group of 34 nuclear tests conducted in 1971–1972. These testsA bomb test may be a salvo test, defined as two or more explosions "where a period of time between successive individual explos ...
– 1971–1972 *
Operation Toggle The United States's Toggle nuclear test series was a group of 28 nuclear tests conducted in 1972–1973. These testsA bomb test may be a salvo test, defined as two or more explosions "where a period of time between successive individual explos ...
– 1972–1973 *
Operation Arbor The United States's Arbor nuclear test series was a group of 18 nuclear tests conducted in 1973–1974. These testsA bomb test may be a salvo test, defined as two or more explosions "where a period of time between successive individual explosio ...
– 1973–1974 * Operation Bedrock – 1974–1975 * Operation Anvil – 1975–1976 *
Operation Fulcrum The United States's Fulcrum nuclear test series was a group of 21 nuclear tests conducted in 1976–1977. These tests A bomb test may be a salvo test, defined as two or more explosions "where a period of time between successive individual expl ...
– 1976–1977 *
Operation Cresset Operation Cresset was a group of 22 nuclear test Nuclear weapons tests are experiments carried out to determine the performance of nuclear weapons and the effects of their explosion. Nuclear testing is a sensitive political issue. Governm ...
– 1977–1978 * Operation Quicksilver – 1978–1979 *
Operation Tinderbox Operation Tinderbox was a series of 14 nuclear tests conducted by the United States in 1979–1980 at the Nevada Test Site. These tests followed the ''Operation Quicksilver (1978), Operation Quicksilver'' series and preceded the ''Operation Gua ...
– 1979–1980 *
Operation Guardian Operation Guardian was a series of 14 nuclear tests conducted by the United States in 1980–1981 at the Nevada Test Site. These tests followed the ''Operation Tinderbox'' series and preceded the ''Operation Praetorian'' series. Referenc ...
– 1980–1981 *
Operation Praetorian The United States's Praetorian nuclear test series was a group of 19 nuclear tests conducted in 1981–1982. These tests A bomb test may be a salvo test, defined as two or more explosions "where a period of time between successive individual ex ...
– 1981–1982 *
Operation Phalanx The United States's Phalanx nuclear test series was a group of 18 nuclear tests conducted in 1982–1983. These tests A bomb test may be a salvo test, defined as two or more explosions "where a period of time between successive individual expl ...
– 1982–1983 *
Operation Fusileer Operation Fusileer was a series of 16 nuclear tests conducted by the United States in 1983–1984 at the Nevada Test Site. These tests followed the '' Operation Phalanx'' series and preceded the ''Operation Grenadier Operation Grenadier ...
– 1983–1984 *
Operation Grenadier Operation Grenadier was a series of 16 nuclear tests conducted by the United States in 1984–1985 at the Nevada Test Site. These tests followed the ''Operation Fusileer'' series and preceded the ''Operation Charioteer'' series. Reference ...
– 1984–1985 *
Operation Charioteer Operation Charioteer was a series of 16 nuclear tests conducted by the United States in 1985–1986 at the Nevada Test Site. These tests followed the ''Operation Grenadier'' series and preceded the ''Operation Musketeer (Nuclear test), Operati ...
– 1985–1986 * Operation Musketeer – 1986–1987 *
Operation Touchstone The United States's Touchstone nuclear test series was a group of 13 nuclear test Nuclear weapons tests are experiments carried out to determine the performance of nuclear weapons and the effects of their explosion. Nuclear testing is a se ...
– 1987–1988 * Operation Cornerstone – 1988–1989 * Operation Aqueduct – 1989–1990 * Operation Sculpin – 1990–1991 *
Operation Julin Operation Julin was a group of 7 nuclear tests conducted by the United States in 1991–1992. These testsA bomb test may be a salvo test, defined as two or more explosions "where a period of time between successive individual explosions does ...
– 1991–1992


Areas

The site is broken down into areas. Some of the areas and their uses include the following:


Area 1

Area 1 held eight nuclear tests for a total of nine detonations. Four early atmospheric tests were conducted above Area 1 in the early 1950s, as well as three underground tests in 1971 and 1990. In 1955, a
Civil Defense Civil defense or civil protection is an effort to protect the citizens of a state (generally non-combatants) from human-made and natural disasters. It uses the principles of emergency management: Risk management, prevention, mitigation, prepara ...
experiment (called Operation Cue in the press) studied nuclear blast effects on various building types; a few structures still stand. Heavy drilling equipment and concrete construction facilities are sited in Area 1. Non-destructive X-ray, gamma ray, and subcritical detonation tests continue to be conducted in Area 1. The radioactivity present on the ground in Area 1 provides a radiologically contaminated environment for the training of
first responders A first responder is a person with specialized training who is among the first to arrive and provide assistance or incident resolution at the scene of an emergency. First responders typically include law enforcement officers (commonly known as ...
.


Area 2

Area 2 was the site of 144 tests comprising 169 detonations. A test named "Gabbs" was intended for early 1993 but was cancelled in 1992 due to a pre-emptive halt to testing based on the
Comprehensive Nuclear-Test-Ban Treaty The Comprehensive Nuclear-Test-Ban Treaty (CTBT) is a multilateral treaty to ban nuclear weapons test explosions and any other nuclear explosions, for both civilian and military purposes, in all environments. It was adopted by the United Nati ...
.


Area 3

Area 3 held 266 nuclear tests for a total of 288 detonations, including Upshot-Knothole 'Harry', more than in any other area of the site. As part of
Operation Tinderbox Operation Tinderbox was a series of 14 nuclear tests conducted by the United States in 1979–1980 at the Nevada Test Site. These tests followed the ''Operation Quicksilver (1978), Operation Quicksilver'' series and preceded the ''Operation Gua ...
, on June 24, 1980, a large satellite prototype (
DSCS III The Defense Satellite Communications System (DSCS) is a United States Space Force satellite constellation that provides the United States with military communications to support globally distributed military users. Beginning in 2007, DSCS began ...
) was subjected to radioactivity from the "Huron King" shot in a vertical line-of-sight (VLOS) test undertaken in Area 3. This was a program to improve the database on nuclear hardening design techniques for defense satellites. The final nuclear test detonation at site was
Operation Julin Operation Julin was a group of 7 nuclear tests conducted by the United States in 1991–1992. These testsA bomb test may be a salvo test, defined as two or more explosions "where a period of time between successive individual explosions does ...
's "Divider" on September 23, 1992, just prior to the moratorium ending all nuclear testing. Divider was a safety experiment test shot that was detonated at the bottom of a shaft sunk into Area 3. In 1995 and 1997, plutonium-contaminated soil from "Double Tracks" and "Clean Slate 1" of
Operation Roller Coaster Operation Roller Coaster was a series of four nuclear tests conducted jointly by the United States and the United Kingdom in 1963, at the Nevada Test Site. The tests did not involve the detonation of any nuclear weapons. Instead, their purpose ...
(1963) was picked up from the
Tonopah Test Range The Tonopah Test Range (TTR, also designated as Area 52) is a highly classified, restricted military installation of the United States Department of Defense, and United States Department of Energy ( nuclear stockpile stewardship) located about ...
and brought to the Area 3 Radioactive Waste Management Site as a first step in eventually returning Tonopah Test Range to an environmentally neutral state. Corrective action regarding the contaminated material from the "Clean Slate 2" and "Clean Slate 3" tests has yet to be agreed upon.


Area 4

Area 4 held 40 nuclear tests for a total of 44 detonations. It is home to the Big Explosives Experimental Facility (BEEF).''Nevada Test Site Guide'', National Nuclear Security Administration
DOE/NV-715


Area 5

Area 5 held 19 nuclear tests. Five atmospheric tests were detonated, starting on January 27, 1951, at Area 5 as part of
Operation Ranger Operation Ranger was the fourth American nuclear weapon, nuclear test series. It was conducted in 1951 and was the first series to be carried out at the Nevada Test Site. All the bombs were dropped by B-50 Superfortress, B-50D bombers and exp ...
. These were the first nuclear tests at the site. Further tower detonations were studied at Area 5, and the '' Grable'' shot which was fired from a M65 Atomic Cannon located in Area 11 exploded in Area 5. The ''
Priscilla Priscilla is an English female given name adopted from Latin '' Prisca'', derived from ''priscus''. There is a theory that this biblical character was the author of the Letter to the Hebrews. The name first appears in the New Testament either ...
'' test was conducted at Area 5 on June 24, 1957. Five underground tests were set up at Area 5; four of those included accidental release of radioactive materials. On March 16, 1968, physicist
Glenn T. Seaborg Glenn Theodore Seaborg ( ; April 19, 1912February 25, 1999) was an American chemist whose involvement in the synthesis, discovery and investigation of ten transuranium elements earned him a share of the 1951 Nobel Prize in Chemistry. His work i ...
toured the upcoming ''Milk Shake'' shot of
Operation Crosstie Operation Crosstie was a series of 48 nuclear tests conducted by the United States in 1967–1968 at the Nevada Test Site. These tests followed the '' Operation Latchkey'' series and preceded the '' Operation Bowline'' series. Nuclear tests G ...
.Radiochemistry.org. History. Nuke tests
. ''Nevada Test Site Images'' (cdrom 3; PDF file)
''Milk Shake''s radioactive release was not detected outside of the site's boundaries.


Area 6

Area 6 held four nuclear tests for a total of six detonations. The area features an asphalt runway, that was constructed on top of a dirt landing strip, that had existed since the 1950s. Some buildings, including a hangar, are situated near the runway. The Device Assembly Facility (DAF) was originally built to consolidate nuclear explosives assembly operations. It now serves as the Criticality Experiments Facility (CEF). The Control Point is the communication hub of the site. It was used by controllers to trigger and monitor nuclear test explosions. In 1982, while a live nuclear bomb was being lowered underground, the base came under attack by armed combatants. The combatants turned out to be a security team conducting an improperly scheduled drill. More recently, an airstrip in Area 6 is in use by the Departments of Defense and Homeland security to test UAV sensors.


Area 7

Area 7 held 92 nuclear tests. During Operation Buster, four successful tests were conducted via airdrop, with bomber aircraft releasing nuclear weapons over Area 7. Shot "Icecap" planned for 1993 was abandoned in Area 7 following 1992's testing moratorium. The tower, shaft and wiring remain in place, along with a crane intended to lower the nuclear test package into the shaft.


Area 8

Area 8 held 13 nuclear tests for a total of 15 detonations. Area 8 hosted the "Baneberry" shot of Operation Emery on December 18, 1970. The Baneberry test detonated below the surface but its energy cracked the soil in unexpected ways, causing a fissure near ground zero and the failure of the shaft stemming and cap. A plume of fire and dust was released, raining fallout on workers in different locations within the site. The radioactive plume released of radioactive material, including of Iodine131.


Area 9

Area 9 held 115 nuclear tests for a total of 133 detonations. In Area 9, the "Hood" test on July 5, 1957, part of
Operation Plumbbob Operation Plumbbob was a series of nuclear tests that were conducted between May 28 and October 7, 1957, at the Nevada Test Site, following ''Project 57'', and preceding '' Project 58/58A''. Background The operation consisted of 29 explosions ...
, was the largest atmospheric test ever conducted within the continental United States; nearly five times larger in yield than the bomb dropped on Hiroshima. A balloon carried Hood up to 460 meters above the ground where it was detonated. Over 2,000 troops took part in the test in order to train them in conducting operations on the nuclear battlefield. of
iodine-131 Iodine-131 (131I, I-131) is an important radioisotope of iodine discovered by Glenn Seaborg and John Livingood in 1938 at the University of California, Berkeley. It has a radioactive decay half-life of about eight days. It is associated with nu ...
(131I) were released into the air.


Area 10

Area 10 held 57 nuclear tests for a total of 71 detonations. The first underground test at the site was the "Uncle" shot of
Operation Jangle Operation or Operations may refer to: Arts, entertainment and media * ''Operation'' (game), a battery-operated board game that challenges dexterity * Operation (music), a term used in musical set theory * ''Operations'' (magazine), Multi-Man ...
. Uncle detonated on November 29, 1951, within a shaft sunk into Area 10. The "John" shot of Plumbbob, on July 19, 1957, was the first test firing of the nuclear-tipped
AIR-2 Genie The Douglas Aircraft Company, Douglas AIR-2 Genie (previous designation MB-1) was an unguided air-to-air rocket with a 1.5 kt W25 (nuclear warhead), W25 nuclear warhead. It was deployed by the United States Air Force (USAF 1957–1985) and Cana ...
air-to-air rocket designed to destroy incoming enemy bombers with a nuclear explosion. The warhead exploded approximately three miles above five volunteers and a photographer who stood unprotected at "ground zero" in Area 10 to show the safety of battlefield nuclear weapons to personnel on the ground. The test also demonstrated the ability of a fighter aircraft to deliver a nuclear-tipped rocket and avoid being destroyed in the process. A Northrop F-89J fired the rocket. The "Sedan" test of
Operation Storax Operation Storax was a series of 47 nuclear tests conducted by the United States in 1962–1963 at the Nevada Test Site. These tests followed the ''Operation Fishbowl'' series and preceded the ''Operation Roller Coaster'' series. British test ...
on July 6, 1962, a shot for the
Operation Plowshare Project Plowshare was the overall United States program for the development of techniques to use nuclear explosives for peaceful construction purposes. The program was organized in June 1957 as part of the worldwide Atoms for Peace efforts. A ...
which sought to discover whether nuclear weapons could be used for peaceful means in creating lakes, bays or canals. The explosion displaced 12 million tons of earth, creating the
Sedan crater Storax Sedan was a shallow underground Nuclear testing, nuclear test conducted in Area 10 (Nevada National Security Site), Area 10 of Yucca Flat at the Nevada National Security Site on July 6, 1962, as part of Operation Plowshare, a program to in ...
which is 1,280 feet (390 m) wide and 320 feet (100 m) deep.


Area 11

Area 11 held 9 nuclear tests. Four of the tests were weapons safety experiments conducted as Project 56; they spread so much radioactive material that Area 11 has been called "Plutonium Valley". As is the case with Area 1, background radiation levels make Area 11 suitable for realistic training in methods of radiation detection.


Area 12

Area 12 held 61 nuclear tests between 1957 and 1992, one of which involved two detonations. All tests were conducted below Rainier and Aqueduct mesas. Area 12 was the primary location for tunnel tests and used almost exclusively for that purpose. The tunnel complexes mined into Rainier and Aqueduct Mesa include the B-, C-, D-, E-, F-, G-, I-, J-, K-, N-, P-, and T-Tunnel complexes, and the R- and S- shafts.


Area 13

There is no Area 13 within NNSS, though such a name is attached to a section of
Nellis Air Force Range The Nevada Test and Training Range (NTTR) is one of two military training areas at the Nellis Air Force Base Complex in Nevada and used by the United States Air Force Warfare Center at Nellis Air Force Base. The NTTR land area includes a "simu ...
which abuts the northeastern corner of Area 15.
Project 57 Project 57 was an open-air nuclear test conducted by the United States at the Nellis Air Force Range in 1957, following Operation Redwing, and preceding Operation Plumbbob. The test area, also known as Area 13, was a by block of lan ...
's weapons safety test was conducted here on April 24, 1957, spreading particles emitting alpha radiation over a large area.


Area 14

Area 14 occupies approximately in the central portion of the NNSS. Various outdoor experiments are conducted in this area.National Nuclear Security Administration / Nevada Site Office, ''Draft Site-Wide Environmental Impact Statement Nevada'', ch.2, July 2011
DOE/EIS-246-D
No atmospheric or underground nuclear tests were conducted in Area 14.


Area 15

Three underground detonations took place in area 15 in the 1960s. ''Pile Driver'' was a notable
Department of Defense The United States Department of Defense (DoD, USDOD, or DOD) is an executive department of the U.S. federal government charged with coordinating and supervising the six U.S. armed services: the Army, Navy, Marines, Air Force, Space Force, ...
test. A large underground installation was built to study the survivability of hardened underground bunkers undergoing a nuclear attack. Information from the test was used in designing hardened missile silos and the
North American Aerospace Defense Command North American Aerospace Defense Command (NORAD ; , CDAAN), known until March 1981 as the North American Air Defense Command, is a Combined operations, combined organization of the United States and Canada that provides aerospace warning, air ...
facility in Colorado Springs. The abandoned Crystal and Climax mines are found in Area 15. Storage tanks hold contaminated materials. From 1964 to 1981, the
Environmental Protection Agency Environmental Protection Agency may refer to the following government organizations: * Environmental Protection Agency (Queensland), Australia * Environmental Protection Agency (Ghana) * Environmental Protection Agency (Ireland) * Environmenta ...
operated a experimental farm in Area 15. Extensive plant and soil studies evaluated the uptake of pollutants in farm-grown vegetables and from the forage eaten by a dairy herd of some 30 Holstein cows. Scientists also studied horses, pigs, goats, and chickens.


Area 16

Area 16 held six nuclear tests.


Area 17

No nuclear tests took place in Area 17.


Area 18

Area 18 held five nuclear tests and includes the
Pahute Mesa Airstrip Pahute Mesa Airstrip is a private-use airport located northwest of the central business district of Mercury, in Nye County, Nevada, United States. The airport is owned by the United States Department of Energy. History Originally built in ...
.


Area 19

Pahute Mesa is one of four major nuclear test regions within the Nevada National Security Site (NNSS). It occupies in the northwest corner of the NNSS. The eastern section is known as Area 19 and the western section as Area 20. A total of 85 nuclear tests were conducted in Pahute Mesa between 1965 and 1992. Three of them – Boxcar, Benham and Handley – had a yield of over one megaton. Three tests were conducted as part of
Operation Plowshare Project Plowshare was the overall United States program for the development of techniques to use nuclear explosives for peaceful construction purposes. The program was organized in June 1957 as part of the worldwide Atoms for Peace efforts. A ...
and one as part of Vela Uniform.


Area 20

The western section of Pahute Mesa, with a portion of the 85 nuclear tests conducted in the Pahute Mesa occurring in this section.


Area 21

There is no Area 21 within NNSS, though such a name is attached to a section of
Los Alamos National Laboratory Los Alamos National Laboratory (often shortened as Los Alamos and LANL) is one of the sixteen research and development Laboratory, laboratories of the United States Department of Energy National Laboratories, United States Department of Energy ...
.


Area 22

No nuclear tests took place in Area 22. Area 22 once held
Camp Desert Rock Desert Rock was the code name of a series of exercises conducted by the US military in conjunction with atmospheric nuclear tests. They were carried out at the Nevada Proving Grounds between 1951 and 1957. Their purpose was to train troops and g ...
, a staging base for troops undergoing atmospheric nuclear blast training; as many as 9,000 troops camped there in 1955. Desert Rock Airport's runway was enlarged to a length in 1969 by the Atomic Energy Commission. It is a transport hub for personnel and supplies going to NNSS and also serves as an emergency landing strip.


Area 23

No nuclear tests took place in Area 23. The town of
Mercury, Nevada Mercury is a closed village in Nye County, Nevada, United States, north of U.S. Route 95 at a point northwest of Las Vegas. It is situated within the Nevada Test Site, Nevada National Security Site and was constructed by the United States A ...
lies within Area 23. The area is the main pathway to and from NNSS test locations by way of
U.S. Route 95 U.S. Route 95 (US 95) is a major north–south United States Numbered Highway System, United States Highway in the western United States. It travels through the states of Arizona, California, Nevada, Oregon, and Idaho, staying inland ...
. An open sanitary landfill is located to the west of Mercury, and a closed hazardous waste site abuts the landfill. Mercury is also the main management area for the site which includes a bar and large cafeteria, printing plant, medical center, warehousing, fleet management, liquidation and recycling center, engineering offices, dormitories, and other administrative areas for both the O&M contractors, LLNL, LANL, and SNL personnel. At its height in the 1950s and '60s, it also held several restaurants, a bowling alley, a movie theater, and a motel.


Area 24

There is no Area 24 within NNSS, though such a name is attached to a satellite site of the NNSS referred to as the North Las Vegas Facility.


Area 25


Area 26

No nuclear tests took place in Area 26, the most arid section of the NNSS. An old abandoned mine, the Horn Silver Mine, was used for waste disposal between 1959 and the 1970s; some of the waste is radioactive. Water flow past the shaft could pose a human health risk, so corrective action has been planned. In 1983 the
Department of Defense The United States Department of Defense (DoD, USDOD, or DOD) is an executive department of the U.S. federal government charged with coordinating and supervising the six U.S. armed services: the Army, Navy, Marines, Air Force, Space Force, ...
, the
Department of Energy A ministry of energy or department of energy is a government department in some countries that typically oversees the production of fuel and electricity; in the United States, however, it manages nuclear weapons development and conducts energy-rela ...
, and the
Federal Emergency Management Agency The Federal Emergency Management Agency (FEMA) is an agency of the United States Department of Homeland Security (DHS), initially created under President Jimmy Carter by Presidential Reorganization Plan No. 3 of 1978 and implemented by two Exec ...
performed the NUWAX-83 tests near Port Gaston in Area 26, simulating the explosion of a nuclear-armed helicopter and the resulting spread of nuclear debris over 65 acres. The radioactive material used to simulate the accident became inert in less than six months. An eight-square-mile complex was constructed in Area 26 in support of
Project Pluto Project Pluto was a United States government program to develop nuclear-powered ramjet engines for use in cruise missiles. Two experimental engines were tested at the Nevada Test Site (NTS) in 1961 and 1964 respectively. On 1 January 1957, th ...
. It consisted of six miles of roads, the critical assembly building, the control building, the assembly and shop buildings, and utilities. Those buildings have been used recently as mock reactor facilities in the training of
first responders A first responder is a person with specialized training who is among the first to arrive and provide assistance or incident resolution at the scene of an emergency. First responders typically include law enforcement officers (commonly known as ...
.


Area 27


Area 28

Area 28 no longer exists; it was absorbed into Areas 25 and 27.


Area 29

No nuclear tests took place in Area 29. The rugged terrain of Area 29 serves as a buffer between other areas of NNSS. A
helipad A helipad is the landing area of a heliport, in use by helicopters, powered lift, and vertical lift aircraft to land on surface. While helicopters and powered lift aircraft are able to operate on a variety of relatively flat surfaces, a fa ...
is present at Shoshone Peak.


Area 30

Area 30 occupies approximately at the center of the western edge of the NNSS. Area 30 has rugged terrain and includes the northern reaches of Fortymile Canyon. It is used primarily for military training and exercises. Area 30 was the site of a single nuclear test, the '' Crosstie Buggy'' row charge experiment, part of
Operation Plowshare Project Plowshare was the overall United States program for the development of techniques to use nuclear explosives for peaceful construction purposes. The program was organized in June 1957 as part of the worldwide Atoms for Peace efforts. A ...
, which involved five simultaneous detonations.


See also

*
Lists of nuclear disasters and radioactive incidents These are lists of nuclear disasters and radioactive incidents. Main lists * List of nuclear and radiation accidents and incidents * List of nuclear and radiation accidents by death toll * List of civilian nuclear accidents * List o ...
*
Savannah River Site The Savannah River Site (SRS), formerly the Savannah River Plant, is a U.S. Department of Energy (DOE) reservation in the United States, located in the state of South Carolina on land in Aiken, Allendale and Barnwell counties adjacent to the ...
– the DOE reservation with similar operations as NTS *
Semipalatinsk Test Site The Semipalatinsk Test Site or Semipalatinsk-21 (; ), also known as "The Polygon", was the primary testing venue for the Soviet Union's nuclear weapons. It is located in Zhanasemey District, Abai Region, Kazakhstan, south of the valley of the Ir ...
* Novaya Zemlya Test Site *
Area 51 Area 51 is the common name of a highly classified United States Air Force (USAF) facility within the Nevada Test and Training Range in southern Nevada, north-northwest of Las Vegas. A remote detachment administered by Edwards Air Force B ...
/ Area 52 *
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. The exercise, under the code name "Snowball" (), involved an aerial detonation of a 40 kt RDS ...
*
International Day against Nuclear Tests The International Day against Nuclear Tests is list of minor secular observances#August, observed on August 29. It was established on December 2, 2009, at the 64th session of the United Nations General Assembly by the United Nations resolution, re ...


References


External links


DOE Nevada Test Site

The Nevada Test Site Oral History Project

Origins of the Nevada Test Site



''Atomic Test Effects In The Nevada Test Site Region'' published by the AEC in 1955, a document with a civilian audience in mind.

Account of NTS fallout in 1955
(PDF)

National Cancer Institute The National Cancer Institute (NCI) coordinates the United States National Cancer Program and 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. ...
(1997) * Rice, James. ''Downwind of the Atomic State: Atmospheric Testing and the Rise of the Risk Society''. (New York University Press, 2023): https://nyupress.org/9781479815340/downwind-of-the-atomic-state/

on the atomic bomb website * Location maps: *
Small map
*

* [https://web.archive.org/web/20060721233704/http://alsos.wlu.edu/qsearch.aspx?browse=places%2FNevada+Test+Site%2C+Nevada Annotated bibliography for the Nevada Test Site from the Alsos Digital Library for Nuclear Issues]
'Exposed' spreads anti-nuke message

Nevada Test Site aerial photos
by Doc Searles, all licensed
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