Word: strata
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...experiment has a practical angle. When geologists understand the mechanism of oil formation, they can recognize rock strata capable of producing oil, and look for the putative product...
...choose now to work for peace. . . . I accepted co-chairmanship of the National Committee to Win the Peace, with Paul Robeson, because the objective of the group is to provide a national forum for the discussion of issues affecting peace. . . . Membership is representative of all strata of American life: religious, educational, labor, management, veteran...
Some of Rio's most recent crimes have reached the top strata of lurid violence. Samples: 1) borrowing a time-worn page from the Aztecs, a boy cut out his beloved's heart; 2) using a sharp hatchet, a man chopped his wife into small pieces as she lay in bed with their two-year-old daughter. Last week the Latin American Congress of Criminologists picked Rio as the site of their 1946 convention...
Testing oil wells by radioactive methods is an established procedure. Down the well goes a small amount of material which gives off neutrons and causes gamma-rays to bounce back from the surrounding rocks. By measuring the gamma-rays, the well-tester gets a fairly clear picture of the strata around the well. Often he finds neglected oil-bearing layers...
...Czechoslovak Communists, at best temporary friends of middleway revolution, have made no move to seize power or to upset the balance envisioned by Dr. Benes. But they hold solid posts in all the key strata of the nation's life-in the Government, army, trade unions, cooperatives, nationalized industry. They are still authoritarians. They flank Masaryk's portrait with Lenin and Stalin...