Word: rocke
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Dates: during 1930-1939
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...hand drills and picks. Like the builders of the great Colorado River Aqueduct, he had to learn as he went along. At the start, he did not even know how to temper his tools. But he learned how. Last week the tunnel was finished - 2,000 ft. through solid rock. William Schmidt expected at last to make some money from his claims...
...specimen of rock under test is placed in a thick steel cylinder. An hydraulic confining pressure is applied through a liquid, or at very high pressures through lead. The highest confining pressure used are about 300,000 pounds per square inch. In addition, a direct, differential pressure is exerted on the specimen by a steel piston. Different pressure used attain more than 1.500,000 pounds per square inch...
Although some varieties of rock were observed to become plastic and flow under relatively low pressure, quartz remained brittle under the very highest confining and differential pressures. Studies of quartz, one of the most common minerals, are vital to investigation of conditions underground. Prior to these tests it was thought that quartz might become plastic udder the high pressures...
...fracture of quartz into needles under stress of natural rock deformation was duplicated in the laboratory tests and observations were made of the crystallographic details of these fractures...
...central figure, a rock-chinned, canny young Scottish giant named Alex MacTay, has the makings of a poet, but instead goes to the U. S. to make a fortune. The year is 1890. On a farm in western Pennsylvania he schemes a partnership in a sidehill coal "bank," marries the farmer's pretty daughter, a schoolteacher, stamps out the last of his poetic impulses. At 34 he owns two big coal mines, is worth a million...