Downwinders
Encyclopedia
Downwinders refers to individuals and communities who are exposed to radioactive contamination
or nuclear fallout
from atmospheric or underground nuclear weapons testing, and nuclear accidents. Currently, this article focuses on incidents in the United States, or caused by its weapons testing.
More generally, the term can also include those communities and individuals who are exposed to ionizing radiation
and other emissions due to the regular production and maintenance of nuclear weapons, nuclear power
, and nuclear waste. In regions near U.S. nuclear sites, downwinders may be exposed to releases of radioactive materials into the environment that contaminate their groundwater systems, food chains, and the air they breathe. Some downwinders may have suffered acute exposure due to their involvement in uranium mining
and nuclear experimentation.
Several severe adverse health effects, such as an increased incidence of cancers, non-cancerous thyroid diseases, and congenital malformations have been observed in many and diverse "downwind" communities exposed to nuclear fallout and radioactive contamination. The impact of nuclear contamination on an individual is generally estimated as the result of the dose of radiation received and the duration of exposure, using the Linear No-Threshold Model (LNT). Sex, age, race, culture, occupation, class, location, and simultaneous exposure to additional environmental toxins
are also significant, but often overlooked, factors that contribute to the health effects on a particular "downwind" community.
, U.S.S.R, United Kingdom
, France
and China
exploded 504 nuclear devices in atmospheric tests
at thirteen primary sites yielding the explosive equivalent of 440 megatons of TNT. Of these atmospheric tests, 330 were conducted by the United States. Accounting for all types of nuclear tests, official counts show that the United States has conducted 1,054 nuclear weapons tests to date, involving at least 1,151 nuclear devices, most of which occurred at Nevada Test Site
and the Pacific Proving Grounds
in the Marshall Islands
, with ten other tests taking place at various locations in the United States, including Alaska, Colorado, Mississippi, and New Mexico. There have been an estimated 2,000 nuclear tests conducted worldwide; the number of nuclear tests conducted by the United States alone is currently more than the sum of nuclear testing done by all other known nuclear states (USSR, Great Britain, France, China, India, Pakistan, North Korea) combined.
These nuclear tests infused vast quantities of radioactive material into the world’s atmosphere, which was widely dispersed and then deposited as global fallout.
, which moves downwind as it reaches its stabilization height. Dispersion of the radioactive elements causes vertical and lateral cloud movement, spreading radioactive materials over adjacent regions. While the large particles settle nearby the site of the detonation, smaller particles and gases may be dispersed around the world. Additionally, some explosions injected radioactive material into the stratosphere
, more than 10 kilometers above ground-level, meaning it may float there for years before being subsequently deposited uniformly around the earth. Global fallout is the result, which exposes everything to an elevated level of man-made background radiation. While "downwinders" refers to those who live and work closest to the explosion site and are thus most acutely affected, there is a global effect of increased health risks due to ionizing radiation in the atmosphere.
In 1980, People magazine revealed some consequences of continental nuclear testing for American citizens. The magazine disclosed that of some 220 cast and crew who filmed a 1956 film, The Conqueror, on location near St. George, Utah
, ninety-one had come down with cancer, with an unheard of 41 per cent morbidity rate. Of these, forty-six had died of cancer by 1980. Among the victims were John Wayne
and Susan Hayward
, the stars of the film.
In the 1950s, people who lived in the vicinity of the NTS were encouraged to sit outside and watch the mushroom clouds that were created by nuclear bomb explosions. Many were given radiation badges to wear on their clothes, which were later collected by the Atomic Energy Commission
to gather data about radiation levels.
In a report by the National Cancer Institute
, released in 1997, it was determined that the nearly ninety atmospheric tests at the Nevada Test Site (NTS) left high levels of radioactive iodine-131 (5.5 exabecquerels) across a large area of the continental United States, especially in the years 1952, 1953, 1955, and 1957. The National Cancer Institute report estimates that doses received in these years are estimated to be large enough to produce 10,000 to 75,000 additional cases of thyroid cancer in the U.S. Another report, published by the Scientific Research Society, estimates that about 22,000 additional radiation-related cancers and 2,000 additional deaths from radiation-related leukemia are expected to occur in the United States because of external and internal radiation from both NTS and global fallout.
The threat of downwind exposure to radioactivity remaining at the Nevada Test Site from nuclear weapons tests was still an issue as late as 2007. The Pentagon
planned to test a 700-ton ammonium nitrate-and-fuel oil
"bunker buster
" weapon. The planned "Divine Strake
" test would have raised a large mushroom cloud of contaminated dust that could have blown toward population centers such as Las Vegas
, Boise, Salt Lake City, and St. George, Utah. This project was cancelled in February 2007, in large part due to political pressure inspired by the threat of downwind exposure to radioactivity.
is a former nuclear weapons production site located in south central Washington state, where the Washington state Department of Health collaborated with the citizen-led Hanford Health Information Network (HHIN) to publicize significant data about the health effects of Hanford’s operations. Established in 1943, Hanford released radioactive materials into the air, water and soil, releases which largely resulted form the routine site’s operation, though some were also due to accidents and intentional releases. Those who lived downwind from Hanford or who used the Columbia River
downstream from Hanford were all exposed to elevated doses of radiation, which are presumed to have caused increased incidents of health problems and birth defects that generated widespread public concern over the public and environmental health implications of the site.
By February 1986, mounting citizen pressure forced the U.S. Department of Energy to release to the public 19,000 pages of previously unavailable historical documents about Hanford’s operations. These reports revealed there had been huge releases of radioactive materials into the environment that contaminated the Columbia River and more than 75000 square miles (194,249.1 km²) of land. In particular, it made clear downwinders exposure to plutonium, which was produced in nuclear reactors along the Columbia River. The reactors used large amounts of water from the river for cooling, which caused materials in the river water to become radioactive as they passed through the reactor. The water and the radioactive materials it contained were released into the river after passing through the reactors, thus contaminating the both groundwater systems and aquatic animals downstream as far West as the Washington and Oregon coasts.
A class-action
lawsuit brought by two thousand Hanford downwinders against the federal government has been in the court system for many years. The first six plaintiffs went to trial in 2005, in a bellwether
trial to test the legal issues applying to the remaining plaintiffs in the suit.
Plutonium
was also separated and purified for use in nuclear weapons, which resulted in the release of radioactive material into the air. Air polluted by material from the Hanford site traveled throughout Washington, Oregon, Idaho, Montana, and even into Canada. Further contamination filtered into the food chain via contaminated fields where milk cows grazed; hazardous fallout was ingested by communities who consumed the radioactive food and drank the milk. Another source of contaminated food came from Columbia River fish; their impact was disproportionately felt by Native American communities who depended on the river for their customary diets. The estimate of those exposed to radioactive contamination due to living downwind of Hanford or ingesting food or water that flowed downstream is as high as 2 million.
One of these many tests, the March 1, 1954 explosion of Castle Bravo
, a U.S. thermonuclear device, was responsible for most of the vast radiation exposure endured by the local population. The fallout-related doses of this single test are believed to be the highest recorded in the history of worldwide nuclear testing. Many of the Marshall Islands which were part of the Pacific Proving Grounds remain contaminated by nuclear fallout, and many of those downwinders who were living on the islands at the time of testing have suffered from a highly increased incidence of several types of cancers and birth defects.
, other solid tumor cancers, and leukemia
. The relationship between radiation exposure and subsequent cancer risk is considered "the best understood, and certainly the most highly quantified, dose-response relationship for any common environmental human carcinogen", according to report by the National Cancer Institute. While men in the United States account for 22 percent more cases of cancer than women, the carcinogenic effects of radiation are much higher in women than in men. In recent years, studies conducted by both the National Research Council and the EPA have confirmed that compared to men, women are at a significantly higher risk of radiation-induced cancers, such and that women’s sensitivity to radiation-induced cancers is much higher than was previously estimated. The increased radiosensitivity of certain organs in women, such as the breast, ovaries, and thyroid is likely the cause of this difference.
In the EPA’s 1999 Federal Guidance Report #13(FGR 13), Cancer Risk Coefficients for Environmental Exposure to Radionuclides, the authors conclude that women have a 48 percent higher radionuclide-related cancer mortality risk than men. Further evidence of sex-based disparities in radiation-induced cancers was published in the 2006 report by the National Research Council’s Committee to Assess Health Risks from Exposure to Low Levels of Ionizing Radiation (known as the BEIR VII report), which found that women’s risk due to radiation exposure exceeded men’s by 37.5 percent. When one considers rates of cancer incidence separately from rates of cancer fatality, the sex disparities are even greater. The BEIR VII Committee concluded that, given the same level of radiation exposure, women are 52 percent more likely than men to develop cancer, while the EPA report puts the estimate of difference as high as 58 percent.
The differences in risk are even greater when considering organ-specific cancers, especially given that both reports identify breast, ovarian, lung, colon, and thyroid tissues as the most radiosensitive among women. For example, the FGR 13 has estimated that the ratio of thyroid cancer incidence for women as compared to men is 2.14, while the findings of BEIR VII suggest that women are even more vulnerable to radiation-induced thyroid cancer at a ratio of 4.76.
As increasing concerns are raised regarding the environmental risks related to breast, it is interesting to note that the BEIR VII report cited evidence that suggests that "radiation may interact synergistically with other risk factors for breast cancer
", raising the possibility that endocrine disrupting chemicals like PCBs and dioxins
might combine to increase the risks associated with radiation beyond that which would be caused by either separately. A related concern is that radionuclides that may be passed through the breast milk, causing some women who are downwinders to be understandably reluctant to breastfeed their children. While reducing the radioactive intake of their infants is an important preventative measure, it denies women the opportunity to engage a preventative measure for their own health; i.e. breastfeeding has been widely documented as a practice that can reduce women's risk of developing breast cancer. By refraining from breastfeeding
, women downwinders' risks of breast cancer incidence becomes even more elevated.
, threatened pregnancy, or congenital disorder on a mother is considerable, affecting not only her physical, sexual, and reproductive health, but her social and emotional wellness, as well. The effects of radiation on fetal formation are also uniquely a women's health issue to the extent that female fetuses' ova are formed while they are still in utero; adverse effects on a mother carrying a female fetus pose multigenerational effects and may increase the daughter's risks for ovarian cancer, infertility, and other reproductive developmental problems.
of 1990, downwinders who are able to show correlations between certain diseases and their personal exposure to nuclear fallout are eligible for $50,000 in compensation from the federal government. Uranium miners are eligible for $100,000, and onsite participants are eligible for $75,000. However, there are particular obstacles to receiving needed health care and compensation faced by many widows of Navajo uranium
miners, who were affected by disproportionately high incidences of fatal lung cancer. One problem for Navajo widows seeking the federal benefits for which they are qualified is the requirement that they document their marriages, although many were married in the 1930s and 1940s in undocumented tribal ceremonies. Language and cultural barriers pose further obstacles to Navajo downwinders; since many elderly Navajos do not speak English, their children bear the responsibility to do the research and procure from a tribal law judge a validation certificate of their tribal marriage. Similarly, it is difficult to access the outdated medical and occupational documentation that the government required even though the government's and uranium companies' own records for Navajo miners are sparse and difficult to access.
Radioactive contamination
Radioactive contamination, also called radiological contamination, is radioactive substances on surfaces, or within solids, liquids or gases , where their presence is unintended or undesirable, or the process giving rise to their presence in such places...
or nuclear fallout
Nuclear fallout
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 shock wave have passed. It commonly refers to the radioactive dust and ash created when a nuclear weapon explodes...
from atmospheric or underground nuclear weapons testing, and nuclear accidents. Currently, this article focuses on incidents in the United States, or caused by its weapons testing.
More generally, the term can also include those communities and individuals who are exposed to ionizing radiation
Ionizing radiation
Ionizing radiation is radiation composed of particles that individually have sufficient energy to remove an electron from an atom or molecule. This ionization produces free radicals, which are atoms or molecules containing unpaired electrons...
and other emissions due to the regular production and maintenance of nuclear weapons, nuclear power
Nuclear power
Nuclear power is the use of sustained nuclear fission to generate heat and electricity. Nuclear power plants provide about 6% of the world's energy and 13–14% of the world's electricity, with the U.S., France, and Japan together accounting for about 50% of nuclear generated electricity...
, and nuclear waste. In regions near U.S. nuclear sites, downwinders may be exposed to releases of radioactive materials into the environment that contaminate their groundwater systems, food chains, and the air they breathe. Some downwinders may have suffered acute exposure due to their involvement in uranium mining
Uranium mining
Uranium mining is the process of extraction of uranium ore from the ground. The worldwide production of uranium in 2009 amounted to 50,572 tonnes, of which 27% was mined in Kazakhstan. Kazakhstan, Canada, and Australia are the top three producers and together account for 63% of world uranium...
and nuclear experimentation.
Several severe adverse health effects, such as an increased incidence of cancers, non-cancerous thyroid diseases, and congenital malformations have been observed in many and diverse "downwind" communities exposed to nuclear fallout and radioactive contamination. The impact of nuclear contamination on an individual is generally estimated as the result of the dose of radiation received and the duration of exposure, using the Linear No-Threshold Model (LNT). Sex, age, race, culture, occupation, class, location, and simultaneous exposure to additional environmental toxins
Environmental toxins and fetal development
It has long been known that the fetus can be sensitive to impacts from adverse environmental exposures. Fetal development can be affected by exposures that occur to either parent prior to conception and to the mother post conception.-Fetal development:...
are also significant, but often overlooked, factors that contribute to the health effects on a particular "downwind" community.
Downwinders and nuclear testing
Between 1945 and 1980, the United StatesUnited States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...
, U.S.S.R, United Kingdom
United Kingdom
The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...
, France
France
The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...
and China
China
Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...
exploded 504 nuclear devices in atmospheric tests
Nuclear testing
Nuclear weapons tests are experiments carried out to determine the effectiveness, yield and explosive capability of nuclear weapons. Throughout the twentieth century, most nations that have developed nuclear weapons have tested them...
at thirteen primary sites yielding the explosive equivalent of 440 megatons of TNT. Of these atmospheric tests, 330 were conducted by the United States. Accounting for all types of nuclear tests, official counts show that the United States has conducted 1,054 nuclear weapons tests to date, involving at least 1,151 nuclear devices, most of which occurred at Nevada Test Site
Nevada Test Site
The Nevada National Security Site , previously the Nevada Test Site , is a United States Department of Energy reservation located in southeastern Nye County, Nevada, about northwest of the city of Las Vegas...
and the Pacific Proving Grounds
Pacific Proving Grounds
The Pacific Proving Grounds was the name used to describe a number of sites in the Marshall Islands and a few other sites in the Pacific Ocean, used by the United States to conduct nuclear testing at various times between 1946 and 1962...
in the Marshall Islands
Marshall Islands
The Republic of the Marshall Islands , , is a Micronesian nation of atolls and islands in the middle of the Pacific Ocean, just west of the International Date Line and just north of the Equator. As of July 2011 the population was 67,182...
, with ten other tests taking place at various locations in the United States, including Alaska, Colorado, Mississippi, and New Mexico. There have been an estimated 2,000 nuclear tests conducted worldwide; the number of nuclear tests conducted by the United States alone is currently more than the sum of nuclear testing done by all other known nuclear states (USSR, Great Britain, France, China, India, Pakistan, North Korea) combined.
These nuclear tests infused vast quantities of radioactive material into the world’s atmosphere, which was widely dispersed and then deposited as global fallout.
How downwinders are exposed to fallout
The nuclear explosions produce a characteristic mushroom cloudMushroom cloud
A mushroom cloud is a distinctive pyrocumulus mushroom-shaped cloud of condensed water vapor or debris resulting from a very large explosion. They are most commonly associated with nuclear explosions, but any sufficiently large blast will produce the same sort of effect. They can be caused by...
, which moves downwind as it reaches its stabilization height. Dispersion of the radioactive elements causes vertical and lateral cloud movement, spreading radioactive materials over adjacent regions. While the large particles settle nearby the site of the detonation, smaller particles and gases may be dispersed around the world. Additionally, some explosions injected radioactive material into the stratosphere
Stratosphere
The stratosphere is the second major layer of Earth's atmosphere, just above the troposphere, and below the mesosphere. It is stratified in temperature, with warmer layers higher up and cooler layers farther down. This is in contrast to the troposphere near the Earth's surface, which is cooler...
, more than 10 kilometers above ground-level, meaning it may float there for years before being subsequently deposited uniformly around the earth. Global fallout is the result, which exposes everything to an elevated level of man-made background radiation. While "downwinders" refers to those who live and work closest to the explosion site and are thus most acutely affected, there is a global effect of increased health risks due to ionizing radiation in the atmosphere.
Health effects of nuclear testing
The earliest concerns raised about the health effects of exposure to nuclear fallout had to do with fears of genetic alterations that may occur among the offspring of those most exposed. However, the observed inheritable effects of radiation exposure by groups with histories of acute risk are considered minimal compared with the significant increase in thyroid cancer, leukemia and certain solid tumors that have developed within a decade or more after exposure. As studies of biological samples (including bone, thyroid glands and other tissues) have been undertaken, it has become increasingly clear that specific radionuclides in fallout are implicated in fallout-related cancers and other late effects.In 1980, People magazine revealed some consequences of continental nuclear testing for American citizens. The magazine disclosed that of some 220 cast and crew who filmed a 1956 film, The Conqueror, on location near St. George, Utah
St. George, Utah
St. George is a city located in the southwestern part of the U.S. state of Utah, and the county seat of Washington County, Utah. It is the principal city of and is included in the St. George, Utah, Metropolitan Statistical Area. The city is 119 miles northeast of Las Vegas, Nevada, and 303 miles ...
, ninety-one had come down with cancer, with an unheard of 41 per cent morbidity rate. Of these, forty-six had died of cancer by 1980. Among the victims were John Wayne
John Wayne
Marion Mitchell Morrison , better known by his stage name John Wayne, was an American film actor, director and producer. He epitomized rugged masculinity and became an enduring American icon. He is famous for his distinctive calm voice, walk, and height...
and Susan Hayward
Susan Hayward
Susan Hayward was an American actress.After working as a fashion model in New York, Hayward travelled to Hollywood in 1937 when open auditions were held for the leading role in Gone with the Wind . Although she was not selected, she secured a film contract, and played several small supporting...
, the stars of the film.
Current status of U.S. nuclear testing
After adopting the Comprehensive Test Ban Treaty in 1996, the U.S. and several other nuclear states pledged to stop nuclear testing. However, as of early 2011, the United States has failed to ratify the Comprehensive Test Ban Treaty.Nevada
From 1951 – mid-1962, the Nevada Test Site (NTS) was a primary site used for both surface and above-ground nuclear testing, with 86 tests at or above ground level, and 14 other tests underground, all of which involved releases of significant amounts of radioactive material into the atmosphere.In the 1950s, people who lived in the vicinity of the NTS were encouraged to sit outside and watch the mushroom clouds that were created by nuclear bomb explosions. Many were given radiation badges to wear on their clothes, which were later collected by the Atomic Energy Commission
United States Atomic Energy Commission
The United States Atomic Energy Commission was an agency of the United States government established after World War II by Congress to foster and control the peace time development of atomic science and technology. President Harry S...
to gather data about radiation levels.
In a report by the National Cancer Institute
National Cancer Institute
The National Cancer Institute is part of the National Institutes of Health , which is one of 11 agencies that are part of the U.S. Department of Health and Human Services. The NCI coordinates the U.S...
, released in 1997, it was determined that the nearly ninety atmospheric tests at the Nevada Test Site (NTS) left high levels of radioactive iodine-131 (5.5 exabecquerels) across a large area of the continental United States, especially in the years 1952, 1953, 1955, and 1957. The National Cancer Institute report estimates that doses received in these years are estimated to be large enough to produce 10,000 to 75,000 additional cases of thyroid cancer in the U.S. Another report, published by the Scientific Research Society, estimates that about 22,000 additional radiation-related cancers and 2,000 additional deaths from radiation-related leukemia are expected to occur in the United States because of external and internal radiation from both NTS and global fallout.
The threat of downwind exposure to radioactivity remaining at the Nevada Test Site from nuclear weapons tests was still an issue as late as 2007. The Pentagon
The Pentagon
The Pentagon is the headquarters of the United States Department of Defense, located in Arlington County, Virginia. As a symbol of the U.S. military, "the Pentagon" is often used metonymically to refer to the Department of Defense rather than the building itself.Designed by the American architect...
planned to test a 700-ton ammonium nitrate-and-fuel oil
ANFO
ANFO is a widely used bulk industrial explosive mixture. It consists of 94 percent porous prilled ammonium nitrate , that acts as the oxidizing agent and absorbent for the fuel — six percent Number 2 Fuel Oil...
"bunker buster
Bunker buster
A bunker buster is a bomb designed to penetrate hardened targets or targets buried deep underground.-Germany:Röchling shells were bunker-busting artillery shells, developed by German engineer August Cönders, based on the theory of increasing sectional density to improve penetration.They were tested...
" weapon. The planned "Divine Strake
Divine Strake
Divine Strake was the official designation for a large-yield, non-nuclear, high-explosive test that was planned for the Nevada Test Site. Following its announcement, the test generated great controversy, centering on two issues: its potential value in developing a nuclear "bunker buster" warhead,...
" test would have raised a large mushroom cloud of contaminated dust that could have blown toward population centers such as Las Vegas
Las Vegas metropolitan area
The Las Vegas Valley is the heart of the Las Vegas-Paradise, NV MSA also known as the Las Vegas–Paradise–Henderson MSA which includes all of Clark County, Nevada, and is a metropolitan area in the southern part of the U.S. state of Nevada. The Valley is defined by the Las Vegas Valley landform, a ...
, Boise, Salt Lake City, and St. George, Utah. This project was cancelled in February 2007, in large part due to political pressure inspired by the threat of downwind exposure to radioactivity.
Hanford
While many downwinders were exposed to weapons testing, millions more have been affected by radioactive fallout due to U.S. sites engaged in the production of nuclear weapons and/or nuclear power. For example, HanfordHanford Site
The Hanford Site is a mostly decommissioned nuclear production complex on the Columbia River in the U.S. state of Washington, operated by the United States federal government. The site has been known by many names, including Hanford Works, Hanford Engineer Works or HEW, Hanford Nuclear Reservation...
is a former nuclear weapons production site located in south central Washington state, where the Washington state Department of Health collaborated with the citizen-led Hanford Health Information Network (HHIN) to publicize significant data about the health effects of Hanford’s operations. Established in 1943, Hanford released radioactive materials into the air, water and soil, releases which largely resulted form the routine site’s operation, though some were also due to accidents and intentional releases. Those who lived downwind from Hanford or who used the Columbia River
Columbia River
The Columbia River is the largest river in the Pacific Northwest region of North America. The river rises in the Rocky Mountains of British Columbia, Canada, flows northwest and then south into the U.S. state of Washington, then turns west to form most of the border between Washington and the state...
downstream from Hanford were all exposed to elevated doses of radiation, which are presumed to have caused increased incidents of health problems and birth defects that generated widespread public concern over the public and environmental health implications of the site.
By February 1986, mounting citizen pressure forced the U.S. Department of Energy to release to the public 19,000 pages of previously unavailable historical documents about Hanford’s operations. These reports revealed there had been huge releases of radioactive materials into the environment that contaminated the Columbia River and more than 75000 square miles (194,249.1 km²) of land. In particular, it made clear downwinders exposure to plutonium, which was produced in nuclear reactors along the Columbia River. The reactors used large amounts of water from the river for cooling, which caused materials in the river water to become radioactive as they passed through the reactor. The water and the radioactive materials it contained were released into the river after passing through the reactors, thus contaminating the both groundwater systems and aquatic animals downstream as far West as the Washington and Oregon coasts.
A class-action
Class action
In law, a class action, a class suit, or a representative action is a form of lawsuit in which a large group of people collectively bring a claim to court and/or in which a class of defendants is being sued...
lawsuit brought by two thousand Hanford downwinders against the federal government has been in the court system for many years. The first six plaintiffs went to trial in 2005, in a bellwether
Bellwether
A bellwether is any entity in a given arena that serves to create or influence trends or to presage future happenings.The term is derived from the Middle English bellewether and refers to the practice of placing a bell around the neck of a castrated ram leading his flock of sheep.The movements of...
trial to test the legal issues applying to the remaining plaintiffs in the suit.
Plutonium
Plutonium
Plutonium is a transuranic radioactive chemical element with the chemical symbol Pu and atomic number 94. It is an actinide metal of silvery-gray appearance that tarnishes when exposed to air, forming a dull coating when oxidized. The element normally exhibits six allotropes and four oxidation...
was also separated and purified for use in nuclear weapons, which resulted in the release of radioactive material into the air. Air polluted by material from the Hanford site traveled throughout Washington, Oregon, Idaho, Montana, and even into Canada. Further contamination filtered into the food chain via contaminated fields where milk cows grazed; hazardous fallout was ingested by communities who consumed the radioactive food and drank the milk. Another source of contaminated food came from Columbia River fish; their impact was disproportionately felt by Native American communities who depended on the river for their customary diets. The estimate of those exposed to radioactive contamination due to living downwind of Hanford or ingesting food or water that flowed downstream is as high as 2 million.
Marshall Islands
While the term "downwinders" generally connotes nuclear fallout victims based in the continental U.S. near sites such as Hanford and NTS, the population of the Marshall Islands bore a large brunt of nuclear testing under the United States' "Pacific Proving Ground" program. Now known officially as the Republic of the Marshall Islands, it was an occupied territory of the United States from 1944–1979, years during which the United States tested 66 nuclear weapons in the Marshall Islands.One of these many tests, the March 1, 1954 explosion of Castle Bravo
Castle Bravo
Castle Bravo was the code name given to the first U.S. test of a dry fuel thermonuclear hydrogen bomb device, detonated on March 1, 1954 at Bikini Atoll, Marshall Islands, as the first test of Operation Castle. Castle Bravo was the most powerful nuclear device ever detonated by the United States ,...
, a U.S. thermonuclear device, was responsible for most of the vast radiation exposure endured by the local population. The fallout-related doses of this single test are believed to be the highest recorded in the history of worldwide nuclear testing. Many of the Marshall Islands which were part of the Pacific Proving Grounds remain contaminated by nuclear fallout, and many of those downwinders who were living on the islands at the time of testing have suffered from a highly increased incidence of several types of cancers and birth defects.
Effects of radiation on female downwinders
The primary long-term health hazard associated with exposure to ionizing radiation as a result of nuclear fallout is an increased risk for cancers of the thyroidThyroid
The thyroid gland or simply, the thyroid , in vertebrate anatomy, is one of the largest endocrine glands. The thyroid gland is found in the neck, below the thyroid cartilage...
, other solid tumor cancers, and leukemia
Leukemia
Leukemia or leukaemia is a type of cancer of the blood or bone marrow characterized by an abnormal increase of immature white blood cells called "blasts". Leukemia is a broad term covering a spectrum of diseases...
. The relationship between radiation exposure and subsequent cancer risk is considered "the best understood, and certainly the most highly quantified, dose-response relationship for any common environmental human carcinogen", according to report by the National Cancer Institute. While men in the United States account for 22 percent more cases of cancer than women, the carcinogenic effects of radiation are much higher in women than in men. In recent years, studies conducted by both the National Research Council and the EPA have confirmed that compared to men, women are at a significantly higher risk of radiation-induced cancers, such and that women’s sensitivity to radiation-induced cancers is much higher than was previously estimated. The increased radiosensitivity of certain organs in women, such as the breast, ovaries, and thyroid is likely the cause of this difference.
In the EPA’s 1999 Federal Guidance Report #13(FGR 13), Cancer Risk Coefficients for Environmental Exposure to Radionuclides, the authors conclude that women have a 48 percent higher radionuclide-related cancer mortality risk than men. Further evidence of sex-based disparities in radiation-induced cancers was published in the 2006 report by the National Research Council’s Committee to Assess Health Risks from Exposure to Low Levels of Ionizing Radiation (known as the BEIR VII report), which found that women’s risk due to radiation exposure exceeded men’s by 37.5 percent. When one considers rates of cancer incidence separately from rates of cancer fatality, the sex disparities are even greater. The BEIR VII Committee concluded that, given the same level of radiation exposure, women are 52 percent more likely than men to develop cancer, while the EPA report puts the estimate of difference as high as 58 percent.
The differences in risk are even greater when considering organ-specific cancers, especially given that both reports identify breast, ovarian, lung, colon, and thyroid tissues as the most radiosensitive among women. For example, the FGR 13 has estimated that the ratio of thyroid cancer incidence for women as compared to men is 2.14, while the findings of BEIR VII suggest that women are even more vulnerable to radiation-induced thyroid cancer at a ratio of 4.76.
As increasing concerns are raised regarding the environmental risks related to breast, it is interesting to note that the BEIR VII report cited evidence that suggests that "radiation may interact synergistically with other risk factors for breast cancer
Breast cancer
Breast cancer is cancer originating from breast tissue, most commonly from the inner lining of milk ducts or the lobules that supply the ducts with milk. Cancers originating from ducts are known as ductal carcinomas; those originating from lobules are known as lobular carcinomas...
", raising the possibility that endocrine disrupting chemicals like PCBs and dioxins
Dioxins and dioxin-like compounds
Dioxins and dioxin-like compounds are by-products of various industrial processes, and are commonly regarded as highly toxic compounds that are environmental pollutants and persistent organic pollutants . They include:...
might combine to increase the risks associated with radiation beyond that which would be caused by either separately. A related concern is that radionuclides that may be passed through the breast milk, causing some women who are downwinders to be understandably reluctant to breastfeed their children. While reducing the radioactive intake of their infants is an important preventative measure, it denies women the opportunity to engage a preventative measure for their own health; i.e. breastfeeding has been widely documented as a practice that can reduce women's risk of developing breast cancer. By refraining from breastfeeding
Breastfeeding
Breastfeeding is the feeding of an infant or young child with breast milk directly from female human breasts rather than from a baby bottle or other container. Babies have a sucking reflex that enables them to suck and swallow milk. It is recommended that mothers breastfeed for six months or...
, women downwinders' risks of breast cancer incidence becomes even more elevated.
Pregnancy and birth outcomes
Mounting research indicates that above certain levels of radiation, a miscarriage will result. Whether there is a determining threshold or whether other factors may make some women more vulnerable to radiation-induced miscarriage has not yet been determined. However, it is clear from studies of nuclear bomb and test site survivors that fetal malformations are a special risk if a woman is exposed to high doses of nuclear-related radiation in early pregnancy, when organs are being formed. The impact of a miscarriageMiscarriage
Miscarriage or spontaneous abortion is the spontaneous end of a pregnancy at a stage where the embryo or fetus is incapable of surviving independently, generally defined in humans at prior to 20 weeks of gestation...
, threatened pregnancy, or congenital disorder on a mother is considerable, affecting not only her physical, sexual, and reproductive health, but her social and emotional wellness, as well. The effects of radiation on fetal formation are also uniquely a women's health issue to the extent that female fetuses' ova are formed while they are still in utero; adverse effects on a mother carrying a female fetus pose multigenerational effects and may increase the daughter's risks for ovarian cancer, infertility, and other reproductive developmental problems.
Compensation for downwinders: gender and race-related obstacles
Under the Radiation Exposure Compensation ActRadiation Exposure Compensation Act
The United States Radiation Exposure Compensation Act 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...
of 1990, downwinders who are able to show correlations between certain diseases and their personal exposure to nuclear fallout are eligible for $50,000 in compensation from the federal government. Uranium miners are eligible for $100,000, and onsite participants are eligible for $75,000. However, there are particular obstacles to receiving needed health care and compensation faced by many widows of Navajo uranium
Uranium
Uranium is a silvery-white metallic chemical element in the actinide series of the periodic table, with atomic number 92. It is assigned the chemical symbol U. A uranium atom has 92 protons and 92 electrons, of which 6 are valence electrons...
miners, who were affected by disproportionately high incidences of fatal lung cancer. One problem for Navajo widows seeking the federal benefits for which they are qualified is the requirement that they document their marriages, although many were married in the 1930s and 1940s in undocumented tribal ceremonies. Language and cultural barriers pose further obstacles to Navajo downwinders; since many elderly Navajos do not speak English, their children bear the responsibility to do the research and procure from a tribal law judge a validation certificate of their tribal marriage. Similarly, it is difficult to access the outdated medical and occupational documentation that the government required even though the government's and uranium companies' own records for Navajo miners are sparse and difficult to access.
See also
- Chernobyl disasterChernobyl disasterThe Chernobyl disaster was a nuclear accident that occurred on 26 April 1986 at the Chernobyl Nuclear Power Plant in Ukraine , which was under the direct jurisdiction of the central authorities in Moscow...
- Nevada-Semipalatinsk
- New Zealand's nuclear-free zoneNew Zealand's nuclear-free zoneIn 1984, Prime Minister David Lange barred nuclear-powered or nuclear-armed ships from using New Zealand ports or entering New Zealand waters. Under the New Zealand Nuclear Free Zone, Disarmament, and Arms Control Act 1987, territorial sea, land and airspace of New Zealand became nuclear-free zones...
- Project 4.1Project 4.1Project 4.1 was the designation for a medical study conducted by the United States of those residents of the Marshall Islands exposed to radioactive fallout from the March 1, 1954 Castle Bravo nuclear test at Bikini Atoll, which had an unexpectedly large yield...
- Windscale fireWindscale fireThe Windscale fire of 10 October 1957 was the worst nuclear accident in Great Britain's history, ranked in severity at level 5 on the 7-point International Nuclear Event Scale. The two piles had been hurriedly built as part of the British atomic bomb project. Windscale Pile No. 1 was operational in...
- Atomic veteranAtomic veteranAn atomic veteran is a veteran of the armed services who has been exposed to dangerous levels of nuclear radiation resulting from atomic weapons in the course of his or her duties.- External links :*...
External links
- Nuclear Testing and the Downwinders from the website of the Utah State Historical Society
- View documentary short "Downwinders: The People of Parowan"