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Later readings were far lower, at 11.9 millisieverts per hour and 0.6 millisieverts, according to the World Nuclear News.

The U.S. Department of Veterans Affairs acknowledges military personnel’s potential exposure to dangerous ionizing radiation and has named thyroid cancer and many other cancers as a “presumptive disease” that allows for automatic disability compensation.

The World Nuclear Association, an industry trade group, has reviewed several of the most well-known nuclear disasters.

The Three Mile Island nuclear power plant near Middletown, Pa., experienced equipment failures within its walls in 1979. Very low levels of radiation were released, and vulnerable people within a five-mile radius of the plant were evacuated. Multiple lawsuits were dismissed after subsequent studies found no evidence of injuries.

In 1986, the Chernobyl Nuclear Power Plant in Soviet Ukraine experienced a reactor explosion and released radiation into neighboring areas. About 24,000 people living within 15 kilometers received an average 450 millisieverts of radiation.

Out of 134 severely exposed Russian workers, 28 died within three months and another 19 died between 1987 and 2004 from different causes. Radiation fallout displaced 336,000 persons. Thyroid cancer cases rose among “Chernobyl children,” but their survival rate was almost 99 percent.

According to later studies on the 1945 atomic bombs dropped on Hiroshima and Nagasaki, some 76,000 persons were exposed to radiation levels up to 5,000 millisieverts. Experts suggested that this exposure led to several hundred additional cancer deaths than what would have been expected in the population.