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a protective internal shield (usually uranium metal or a tungsten alloy), and a cylinder of radioactive source material ( caesium-137 in the Goiânia incident, but usually cobalt-60 ) The Goiânia accident [ɡojˈjɐniɐ] was a radioactive contamination accident that occurred on September 13, 1987, in Goiânia , Goiás , Brazil, after an ...
Uranium's radioactivity can present health and environmental issues in the case of nuclear waste produced by nuclear power plants or weapons manufacturing. Uranium is weakly radioactive and remains so because of its long physical half-life (4.468 billion years for uranium-238).
Potassium-40 (up to 88% of total activity), carbon-14 (14 C), radium-226, uranium-238 and rubidium-87 (87 Rb) are found in ocean waters. Moreover, in groundwater abound radius radioisotopes such as radium-226 and radium-228 (228 Ra). [7] [8] They are also habitual in building materials radionuclides of uranium, thorium and potassium (the latter ...
Did a Tri-Cities scientist eat radioactive uranium in the ‘80s to prove that it is harmless?. Maybe, says a recent new fact check by Snopes.com. Galen Winsor was a Richland nuclear chemist who ...
When asked if he would eat a cookie off a plate made of uranium glass, Dr. Frame answered "I have," and reminisced about a dinner party he went to were the entire meal was served on the stuff.
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Scientist Harry Daghlian suffered fatal radiation poisoning and died 25 days later after accidentally dropping a tungsten carbide brick onto a sphere of plutonium, which was later (see next entry) nicknamed the demon core. The brick acted as a neutron reflector, bringing the mass to criticality. This was the first known criticality accident ...
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