Word: uranium
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Wyoming (3): Uranium boom and missile-base construction brought in new workers, bolstered unions, boosted voter registration, and the Democrats have been working hard to organize them. KENNEDY...
...long as U-235, the explosive isotope in natural uranium, was hard to get, only the biggest powers could afford nuclear bombs. Now everybody-Mao, Castro, Nasser or whoever-may soon be able to have a bomb of his own. Previously, U-235 was almost impossible to separate from nonexplosive U-238, except with great expense and difficulty. But, said Tennessee's Democratic Senator Albert Gore, member of the Joint Committee on Atomic Energy, last week: "recent advances in [centrifuge] technology have now brought the capability of producing weapons-grade material within the reach of not just...
This was no surprise to nuclear professionals. When the U.S. was developing the first atomic bomb during World War II, one of the several promising ways to purify U-235 was to pass uranium hexafluoride, a uranium-containing gas, through a centrifuge-a sort of souped-up cream separator-that would spin the gas at enormous speed and subject it to high, gravitylike forces. The slightly lighter molecules containing U-235 would tend to stay near the center of the centrifuge, while the heavier molecules containing U-238 would move toward the spinning sides...
Through the Pores. In their haste to develop the atomic bomb, the World War II scientists put aside the centrifuge. Instead, they built at Oak Ridge, Tenn. an enormous diffusion plant that worked by pumping uranium hexafluoride through thousands of porous barriers. The U-235 went through the pores a bit more easily than U-238, and was separated...
...government officials tried to persuade the West German government to clamp secrecy on centrifuge technology. But no expert believes that knowledge of uranium centrifuges, already widely disseminated, can be regulated away...