Word: uranium
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...Last week a former high commissioner of the French Atomic Energy Commission took issue with that belief. Addressing a meeting of the French Academy of Sciences in Paris, Physicist Francis Perrin argued that nature, not man, produced the first chain reaction, and that it occurred in an African uranium deposit perhaps 1.7 billion years...
Evidence of a prehistoric, spontaneous nuclear reaction was discovered by researchers at the French uranium-enrichment center at Pierrelatte. Analyzing uranium from the Oklo mine in Gabon, Africa, they found that it contained an abnormally low proportion of uranium 235, the radioactive isotope that powered the first atomic bomb with its awesome energy. In all other known uranium deposits-including a sample brought back from the moon by Apollo astronauts-U-235 invariably makes up .72% of the uranium ore; but the samples from the Oklo mine, which was opened in 1969, contained as little...
...most significant of Venera's revelations is that the chemical composition of at least part of the surface is similar to the earth's. Venera's gamma-ray spectrometer determined that the landing area contained radioactive potassium, uranium and thorium in approximately the same ratio in which they appear in many volcanic rocks on earth. This, in turn, indicates that Venus, like the earth, Mars and the moon, is "differentiated"; that is, the planet was once hot enough for its material to soften and flow. During this period, the heavier elements settled toward the core while...
...from the U.S., only $440 million would be paid for by the March goal. The goods include $320 million worth of air buses, $50 million worth of grains, plus $390 million in increased purchases of agriculture, forestry and fishery products. Also included was $320 million for the enrichment of uranium to be used in Japan's nuclear power plants. The tough, gravel-voiced Tanaka declared his intention to reduce the long-range balance "to a more manageable size within a reasonable time...
Extra Money. In last week's talks, the Americans were disappointed. The Japanese government agreed to buy only some $26 million worth of U.S. grain, but it might soon increase advance purchases of American uranium, soybeans and wheat. This means that the Japanese would stockpile more than their country needs now and buy less later. The move would at least temporarily reduce Japan's $3.8 billion trade surplus with the U.S., but it would do nothing to alter its remaining import restrictions...