Word: coppered
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
...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...
...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...
...jalopy campaign, in New York and New Jersey asked auto dealers and junkmen to turn in at least 420,000 old autos by year's end (normal: less than 100,000). Since each jalopy yields 1,500 lb. of steel scrap, 30 lb. of lead, 25 lb. of copper and 22 lb. of zinc, the junk-auto scheme could mean a fat addition to U.S. metal supplies...
...moon reached its full eclipse, appearing as a dull copper ball, at 11:01 o'clock and remained unchanged until 12:35 when the earth's shadow began to recede. Since the dimout regulations removed most of the glare from the skies and only scattered clouds appeared, the course of the phenomenon was clearly visible in all its stages...