Word: extract
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Dates: during 1940-1949
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Until this spring, Dow drew all its magnesium from its inexhaustible brine wells at Midland, Mich. From these it is now extracting magnesium at the rate of 12,000 tons a year-26 times as much as in 1929. This spring Dow tapped a new source which has stirred everyone's imagination : it began mining sea water for magnesium at a great $15,000,000 plant at Freeport, Tex., which by year's end will be sucking in 12,000,000 gallons a day (enough water for a city of 120,000) and turning out 50 tons...
While Dow has been pioneering the extraction of magnesium from water, others have been studying how to extract magnesium from rock. TVA scientists are working on the Carolinas' abundant magnesium silicate called olivine, of which 27% is recoverable magnesium (in contrast to sea water's .1%). When this ore is mixed with hydrochloric acid, magnesium chloride is formed which can be treated by electrolysis just like that from water. Because olivine is so rich in metal and TVA power sells cheaply, experiments have been launched at Georgia Tech in the hope of making this a major U.S. source...
...expansion to bring Morenci's production to 10,000 tons monthly, some 13% of total current U.S. production. Defense Plant Corp. would finance the new ore-handling and refining equipment ($28,000,000). Phelps Dodge had figured Morenci's vast reserves would take 28-30 years to extract. Now it may have to figure on a briefer future...
...anesthetic, cut open the arteries high on each leg, broke up the blood clot with a special probe, then sucked out the pieces with a long, slender tube. As soon as his blood vessels were stitched up, the patient was given transfusions and large injections of heparin, a liver extract which prevents clotting. Immediately after the operation, said Drs. Ravdin and Wood, "the color and temperature of the right leg returned to normal." His left leg recovered more slowly. For almost two weeks after the operation, heparin was constantly dripped into his veins...
...process of choosing first year applicants for Navy Sci. is generally more rigorous than that for Military Science, since physical requirements are much more exacting. This year, the Naval R. O. T. C. at Harvard secured an extract of each students preparatory school record for use in deciding whether or not he should be admitted...