Word: cobalt
(lookup in dictionary)
(lookup stats)
Dates: during 1940-1949
Sort By: most recent first
(reverse)
...Cobalt Comeback. One of the first towns to revive was Ontario's Cobalt. Its fabulous story began in 1903 when Fred La Rose, a railway worker, picked up a piece of ore in an isolated rail cut. He thought it was copper; on assay it showed a phenomenal 13,000 oz. of silver to the ton. Prospectors poured in, and made one jewelry-store strike after another. In four years, 44 mines were opened. By 1916 Cobalt mines had produced 300,000,000 oz. of silver. By 1922 the richest veins had petered out and the price...
...years Cobalt was a ghost town. Then in 1940 it hit the comeback trail. The war created a heavy U.S. demand for cobalt as an alloy in cutting tools. In the town's heyday, get-rich-quick silver miners had tossed cobalt ore aside as useless; now it was worth over 80? a pound, and the old cobalt dumps were in demand...
...Cunico (copper, nickel, cobalt) and cunife (copper, nickel, iron), used for magnetic screws to effect extremely fine adjustments in small motors, gyroscopes and aircraft instruments...
...Alnico (aluminum, nickel, cobalt and iron), a hard, brittle alloy which can lift 4,450 times its own weight...
...Vectolite, a powerful lightweight magnetic material, made by compressing powdered iron rust and cobalt oxide, used in sensitive aircraft controls...