Word: stiruga
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...stratosphere in the form of extremely fine dust. The explosion on March 1, 1954 behaved differently because it was a "tower shot" that stirred up millions of tons of quick-settling coral dust. First radioactive material from the May 21 explosion was brought home by the tuna boat Stiruga Maru. Analyzed by Dr. Kenjiro Kimura of Tokyo University, it proved to contain a familiar array of fission products-ruthenium, rhodium, tellurium, iodine, cerium, neodymium, etc.-as well as uranium 237 and neptunium 239. This combination of elements indicated that the explosion was the "fission-fusion-fission" type, which gets much...
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