Word: coppers
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Dates: during 1940-1949
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...Belgian Congo and Northern Rhodesia are the world's principal sources of cobalt, used in hard steel for toolmaking. Vanadium and manganese, also necessary for steel, come from the Gold Coast and South Africa. Tin comes from Nigeria, industrial diamonds from the fabulous Transvaal mines, rubber from Liberia, copper from the Congo...
...impracticable because Idaho's 6,000,000,000 tons of phosphate rock contain only 500,000 tons of vanadium, a mere one-tenth to one-fourth of one per cent vanadium. This concentration would be too low for practicable extraction, were it not for the fact that Anaconda Copper Co. is already processing over 100,000 tons of phosphates a year as fertilizer. From this tonnage some 200 to 250 tons of vanadium can be extracted as a byproduct. This is enough to supply about 25% of the annual U.S. demand...
...workers will soon match for cokes with a new kind of nickel. Treasury Secretary Morgenthau last week told the Philadelphia mint to get going on new U.S. 5? pieces containing 35% silver, 56% copper, 9% manganese-but no nickel. The current Jefferson head-and-home design will not be changed. Present coins are 25% nickel-75% copper, and the switch to new alloys will save about 850 tons of nickel and copper annually...
...will also save a lot of headaches for the U.S. Treasury, which has worked on nickel-less nickels for almost a year. Last February a 50% silver-50% copper nickel was tested, wouldn't go down most coin-operated machines. The new nickels work fine...
...circuit which thus acts much like a special track for radio waves. As in radio, many frequency channels are available so that several conversations or signals could be carried by the same wire at the same time. By eliminating the need for separate telephone lines, many tons of aluminum, copper and steel could be saved. Chief obstacle: lack of materials for telephone instruments...