Word: underground
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...Germans who voted against the Nazi ticket in November 1932-the last free election in Germany -are converts to Naziism. There is still an underground opposition to Hitler which all the Führer's Horst Wessels and all the Führer's men (5,000,000 storm troops, party workers, secret police) have not stamped...
Some recent underground outcroppings...
Pressures reaching up to 2,000,000 pounds per square inch are being applied to rocks and crystals by David T. Griggs, Junior Follow in Geophysics. in a study of geological forces deep underground. Tests used involve the highest one directional stress ever controlled and measured in laboratory research. High pressure equipment utilized was developed at Harvard by Professor Percy W. Bridgeman...
Under a confining pressure equivalent to a depth of 32 miles underground, a limestone cylinder was compressed 35 percent in length without shattering. Similar tests show that the flow of rocks under pressure is mathematically alike to the flow of metals...
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...