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  • March 1, 1954 - Bravo, a 15-megaton hydrogen bomb detonated by the United States at Bikini Atoll in the Pacific, contaminates a Japanese fishing boat, Lucky Dragon, residents of Rongelap and Utirik, and wide areas of the Marshall Islands.
  • March 5, 1970 - The Non-Proliferation Treaty enters into force.
  • March 11, 2011 - A 9.0 earthquake and subsequent tsunami strike Japan, causing the Fukushima Daiichi Nuclear Power Plant to shut down. Emergency cooling systems fail, causing the plant to experience partial meltdown. The crisis is labeled at the highest level on the International Nuclear Events Scale, meaning there is a "major release of radioactive material with widespread health and environmental effects."
  • March 28, 1946 - Acheson-Lilienthal Report on the International Control of Atomic Energy is released stating, "Only if the dangerous aspects of atomic energy are taken out of national hands...is there any reasonable prospect of devising safeguards against the use of atomic energy for atomic bombs."
 
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