Word: fallouts
(lookup in dictionary)
(lookup stats)
Dates: during 1950-1959
Sort By: most recent first
(reverse)
...Clean" thermonuclear bombs, like clean small boys, do not necessarily stay clean for long. The most familiar kind of radioactive fallout comes from the fission of plutonium or uranium 235, and from the so-called clean bombs that the U.S. Government has announced contain only small amounts of these troublemaking substances. The bulk of the bomb's bang comes from fusion of hydrogen, which creates no fission products...
...bomb can be clean in one way and dirty in another. In Science, William H. Shipman and other scientists from the Naval Radiological Defense Laboratory, San Francisco, tell how they found large quantities of radioactive manganese 54 in the fallout from last year's thermonuclear tests at Eniwetok. Since Mn-54 is not a fission product, they concluded that it was formed when free neutrons from the explosion combined with iron or ordinary manganese, presumably in the bomb's structure. Figuring back, they estimated that "megacurie quantities" were produced...
...Atomic Energy Commission's Livermore, Calif, fusion laboratory, Teller turns his mind to development of tactical-size, low-fallout thermonuclear weapons. In addition, he serves on the AEC's General Advisory Committee and the Air Force's Scientific Advisory Board, carries on his own strenuous public education campaign in media as far afield from pure science as the This Week Sunday supplement. Main topics: the survival value of underground bomb shelters, the need for continued nuclear-weapons tests, and, above all, the urgency of keeping ahead of Russia in science...
...With no public cults or causes to speak of, the student does have one commitment that he takes most seriously: a commitment to himself. "They feel," says Columbia Historian Richard Hofstadter, "that there is nothing much they can do about so many things like radioactive fallout. So today, college students are serious about their careers, and they feel that's about, all they can do." In this sense, students are "more individualistic than anyone would guess," says Amherst Psychologist Robert Birney. "They try to be able to cope with what they can control. They don't worry about...
This made little sense to uranium men, who saw as their only incentive a present-day market for their ores. Many of the small-time uranium miners who do not have contracts to sell to existing mills will fold up altogether. Such a fallout could peril future U.S. uranium supply, since some of the richest U.S. uranium lodes have been discovered by the small timers who were willing to search in the most improbable places. Said Albuquerque's E. P. Chapman Jr., one of the Southwest's top mining engineers: "The new policy kills all further exploration...