Word: copper
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Dates: during 1930-1939
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...organic solvent, forced the solution through fine holes, finally obtaining long fibres which were spun into threads (Tubize). The viscose process (treating cotton with caustic soda and carbon disulphide) was patented eight years later by two U. S. chemists. Later a third method (little used today) was found using copper hydroxide and ammonia, and still later came a fourth in which the final product is not cellulose but cellulose acetate. Viscose rayon leads in U. S. production; the costlier acetate rayon?of which Du Font's much publicized fabric "Acele" is an example?is second. Most industrial chemists feel that...
...decadence, left the Old Empire cities wholly deserted. Last spring J. Eric Thompson of Chicago's Field Museum made excavations in the Old Empire site around San Jose, reported evidence of continuous occupation down to the 15th Century, just before the Spanish invasions. He dug up copper vessels, a shred of cloth smaller than a dime, neither of which had been found in this region before ; an axe carved from a single block of obsidian; a mirror wrought from a circular piece of hematite; a beautiful jade head in the grave of a sacrificed child...
Montana. Anaconda Copper's 3,600 striking miners and 1,500 smelter workers began heaving scrap iron and rocks at engineers, superintendents and non-union men engaged in manning the pumps which keep three mines at Butte from being flooded. The strike, for a 30-hour week and a pay increase from 60? to $1.25 an hour, has been in progress since May 8, and all negotiations for its settlement have failed...
...testing plant in Pittsfield, Mass. Ninety-six pyranol-filled capacitators (condensers) were mounted on insulators and ranged three deep in a hollow square. Each row of three capacitators was connected in series, and the inside, middle and outside banks of 32 each were hooked up in parallel. Heavy copper straps converged like spider webs from the square to each of the two spheres in the centre. Ordinary 110-volt, 60-cycle current was stepped up by transformers to 75,000 volts, increased by rectifier tubes to 150,000. Half a minute is required to charge the capacitators. The discharge...
...piece of heavy copper wire vaporized into thin...