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Plutonium-242 (242 Pu or Pu-242) is the second longest-lived isotope of plutonium, with a half-life of 375,000 years. The half-life of 242 Pu is about 15 times that of 239 Pu; so it is one-fifteenth as radioactive, and not one of the larger contributors to nuclear waste radioactivity.
In June 2020, State Impact of Pennsylvania stated that "In 1979, the EPA banned the use of PCBs, but they still exist in some products produced before 1979. They persist in the environment because they bind to sediments and soils. High exposure to PCBs can cause birth defects, developmental delays, and liver changes." [10]
The permissible exposure limit (PEL or OSHA PEL) is a legal limit in the United States for exposure of an employee to a chemical substance or physical agent such as high level noise. Permissible exposure limits were established by the Occupational Safety and Health Administration (OSHA). Most of OSHA's PELs were issued shortly after adoption of ...
A worker at a federal prison in California has died and investigators are examining whether he was exposed to fentanyl shortly before his death, three people familiar with the matter told The ...
The head of the Transportation Security Administration on Thursday warned that an extended partial U.S. government shutdown could lead to longer wait times at airports. TSA, which handles airport ...
Just before another federal trial was scheduled to start in September, Hunter Biden pleaded guilty to three felonies and six misdemeanors that alleged he failed to pay $1.4 million in taxes ...
OSHA selected that standard because it believed that (1) it could not determine a safe exposure level and that (2) the authorizing statute did not require it to quantify such a level. [2] The AFL Industrial Union Department served as the petitioner; the American Petroleum Institute was the respondent. A plurality on the Court, led by Justice ...
Donald Trump mocked Canadian Prime Minister Justin Trudeau after his top minister’s surprise resignation following a clash on how to handle the president-elect’s looming tariffs.