Word: tars
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Dates: during 1950-1959
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Ever since Dr. Ernest L. Wynder championed the view that heavy cigarette smoking is a major cause of lung cancer, he has been challenged to produce the substances in tobacco smoke (or tar) that do the damage. Last week the American Association for Cancer Research, meeting in Atlantic City, took Wynder's word for it that he has now run the number of tobacco-tar fractions capable of causing cancer up to eight, with the end not yet in sight...
Working with Dr. Dietrich Hoffmann at Manhattan's Sloan-Kettering Institute, said Dr. Wynder, he has found in the tar no fewer than 17 hydrogen-carbon compounds of the polycyclic group (i.e., with several carbon rings in the molecule). Nine have been exonerated, but to the six already known to produce cancer on the backs of mice the Wynder-Hoffmann team has added two more-3.4-benzfluoranthene and 10.11-benzfluoranthene. But these chemicals occur only in minute quantities in cigarette tar...
Soviet propaganda has tried with some success over the years to tar the U.S. as a villain for carrying out nuclear tests and to whitewash the Soviet Union as a do-gooder for demanding a nuclear test ban. In a speech last week, Atomic Energy Commissioner Willard F. Libby demolished the Soviet we're-on-the-side-of-the-angels pose. He pointed out that in October-six months after the Soviets had won the plaudits of the world's neutralists for piously suspending nuclear tests, and just after the U.S. announced its decision to suspend tests...
Richfield's big atomic bet is based on a chemical peculiarity: the molecular structure of Athabaska oil is such that, once thinned by heat, it flows indefinitely, whereas many heavy crudes thicken again in cooling. The spot picked by Richfield for its experiment has rich tar sand down to a depth of 1,000 ft. Then the underlying rock begins. If the A-bomb experiment works, the first small-scale (two-kiloton) detonation will be set off in the rock strata 1,200 ft. below the ground. Engineers expect that the bomb will create a huge cavity, and heat...
...field, first heard of the nuclear scheme, he scoffed at it as "something of a Jules Verne story." Now he sees it as "a new type of mining." Indications last week were that the project is progressing. At the U.S. Atomic Energy Commission's Oak Ridge installation, tar sands were being tested to see whether the radioactivity will be held safely underground. The U.S. will probably agree to provide A-bombs for Canada to push the experiment...