Word: coppers
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Dates: during 1940-1949
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...betatron, a close relative of the ordinary transformer which raises or lowers the voltage of an alternating current, is an electron accelerator. A whopping electromagnet (130 tons) is energized by a heavy current flowing through two coils made of one-inch copper rods...
...half-dollar, for instance, held briefly in its beam, becomes dangerously radioactive. The rays knock neutrons out of silver atoms, turning them into an unstable silver isotope, which breaks down into cadmium, giving off powerful streams of electrons. Some silver, too, is turned into palladium, while some of the copper in the coin's alloy is turned into atoms of nickel.* The betatron is controlled from a neighboring room...
...domestic reserve of copper will be mined out in less than 34 years...
...Small Copper Box. Snow and his brother, Donald, headed for the island last week with a shovel and an electronics device like a mine detector, used in locating metals. Five times they dug down, found buried hulks. Their sixth excavation hit the jackpot: a small, encrusted copper box. It was full of tarnished old coins minted in Peru, Mexico, Portugal, France and Spain...
...road was also in constant use by two million nomadic savages, who were dead-shots with the kind of sling that David used against Goliath, and who spent their spare time stripping the copper wire off the line of telegraph poles. The nomads explained that they knew all about war: their ancestors had fought a dandy one against the Sumerians in 3000 B.C., and their ruling Khan unfailingly subscribed to the airmail edition of TIME...