Word: hiroshima
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...supply of hot tropical air, the storm feeds on itself, generating roaring winds that swirl around its "eye." When the system reaches cooler and dryer air on land, it begins to lose force. By then, however, the storm may have released energy equivalent to that of about 9 million Hiroshima-type atom bombs...
...amounts into building a small nuclear device. Taylor says that if such a regime could get its hands on enough plutonium, it would require only a few thousand dollars to build a device with a yield of ten kilotons, three kilotons less than that of the bomb that leveled Hiroshima, that could fit into a medium-size car. "I'd give them a pretty good chance, say, one in three, of building one that would work the first time," he says...
...Kahuta is just one outcropping of a far bigger nightmare: nuclear proliferation, the spread of atomic weaponry, has entered a new and ever more ominous phase. As the 40th anniversary of the A-bomb explosion over Hiroshima approaches, the world has special reason to view what is happening with trepidation, at the very least. On the Asian subcontinent, in the Middle East, in southern Africa and, to a lesser degree, in South America, a number of countries have acquired or are in the process of acquiring the capacity to build atomic weapons. At the same time, the fragile international system...
...radioactive elements used in atom bombs. Uranium enrichment is the process by which the concentration of U-235 in natural uranium is increased, eventually to weapons-grade material. From 33 to 55 lbs. of U-235 at roughly 93% purity can be used in a Hiroshima-size bomb. Reprocessing is the chemical procedure for extracting Pu-239 from the spent uranium fuel of nuclear reactors, where the plutonium is produced as a waste product. A breeder reactor uses plutonium as fuel rather than uranium: by atomic fission, additional uranium placed in the breeder is converted into more plutonium than...
...Hersey, 70, is back home on Martha's Vineyard after wintering in Key West. But his attention is already turning westward, across Vineyard Sound and Buzzards Bay, over the American landmass, toward the Pacific and beyond. The New Yorker once again has asked him to visit and write about Hiroshima, 40 years after the city was destroyed by a single bomb and 39 years after Hersey marked the first anniversary of atomic warfare with the most celebrated piece of journalism to come out of World War II. Hiroshima filled the magazine's entire August 31, 1946, issue. Published in hardcover...