Word: coppers
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Dates: during 1930-1939
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...motormakers still had cause to boast. With pride they could point to the fact that their gargantuan industry devours 82% of the rubber, 55% of the plate glass, 15% of the iron & steel, 57% of the upholstery leather, 30% of the aluminum, 14% of the copper, 15% of the hardwood, 24% of the lead, 80% of the gasoline consumed in the U. S.; that it fills 3,080,000 freight cars a year; that it employs almost 5,000,000 workers...
There lies the main obstacle to the plan: the problem of re-purification of the combined gases. Experimenters now propose passing the polluted gas under pressure over copper oxide, which would act as a catalytic agent and cause the hydrogen and oxygen to form water...
...Copper. Many an effort has been made to stabilize the price of copper. Copper...
Exporters, Inc. was formed in 1926 to fix the price of copper in Europe, and for a long time U. S. producers seemed to have a gentleman's agreement on price. In copper as in other U. S. industries, however, anti-trust laws prohibit definite price agreements. Copper producers now are attempting to curtail production, but the price was back last week to 10? after its recent jump from 9? to 12? (TIME, Nov. 24). The world copper situation is complicated by potential African production which may soon overbalance U. S. curtailment. Tin. Attempts to curb tin production have...
...airport, that he had little knowledge of aeronautics. But Thomas Edison, like Leonardo da Vinci, attacked the problem of aerodynamics early in his inventive career. About 1880 he devised an airplane engine powered by nitroglycerin. A roll of ordinary ticker-tape, turned into guncotton, was fed between two copper rolls into the cylinder and exploded electrically. But when the engine itself exploded and injured an assistant, Edison abandoned the project. In 1910 he secured a patent for a helicopter type, said to embody a number of tetrahedral (box) kites to be whirled about a vertical axis...