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For its targets, Stuxnet contains, among other things, code for a man-in-the-middle attack that fakes industrial process control sensor signals so an infected system does not shut down due to detected abnormal behavior. [38] [61] [62] Such complexity is very unusual for malware. The worm consists of a layered attack against three different systems:
In 1946, six employees of a Chicago metallurgical lab were given water that was contaminated with plutonium-239 so that researchers could study how plutonium is absorbed into the digestive tract. [71] An eighteen-year-old woman at an upstate New York hospital, expecting to be treated for a pituitary gland disorder, was injected with plutonium. [78]
Plutonium–gallium–cobalt alloy (PuCoGa 5) is an unconventional superconductor, showing superconductivity below 18.5 K, an order of magnitude higher than the highest between heavy fermion systems, and has large critical current. [46] [50] Plutonium–zirconium alloy can be used as nuclear fuel. [51]
Watchdogs are raising new concerns about legacy contamination in Los Alamos, the birthplace of the atomic bomb and home to a renewed effort to manufacture key components for nuclear weapons. A ...
One of four example estimates of the plutonium (Pu-239) plume from the 1957 fire at the Rocky Flats nuclear weapons plant. The Rocky Flats Plant, a former United States nuclear weapons production facility located about 15 miles (24 km) northwest of Denver, caused radioactive (primarily plutonium, americium, and uranium) contamination within and outside its boundaries. [1]
Tell the whole story of plutonium’s use. Our entire region should be extremely proud of the B Reactor. A massive edifice, built in a year, under tight security. The B Reactor is an underutilized ...
The Plutonium-238 used in RTGs has a half-life of 88 years, as opposed to the plutonium-239 used in nuclear weapons and reactors, which has a half-life of 24,100 years. [ full citation needed ] In April 1964 a SNAP-9A failed to achieve orbit and disintegrated, dispersing roughly 1 kilogram (2.2 lb) of plutonium-238 over all continents.
Also, the plutonium was distributed unevenly, with the upper layer of solution containing especially high concentrations, amounting to a total of >3 kg of plutonium, dangerously close to criticality. When Kelley switched on the mixer, a vortex began to form. The denser aqueous layer within the tank was forced outward and upward forming a "bowl ...