Word: copperizing
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...walls, forming a pool at the bottom that will solidify into a glassy mass containing as much as 90% of the radioactive products of the A-blast. At the same time the roof of the cavern will begin to collapse, eventually forming a 440-ft. cavity filled with fractured copper...
...program, the Atomic Energy Commission has been investigating the use of nuclear explosives to blast out harbors and canals, to create underground storage cavities, and to release natural gas and oil locked beneath the surface of the earth. Now, in an attempt to do something about growing shortages of copper in the U.S., a team of scientists has worked out a nuclear plan to mine billions of tons of copper-bearing ore too poor to be mined by traditional methods...
Scientists from the AEC, the U.S. Bureau of Mines, the University of California's Lawrence Radiation Laboratory and the Kennecott Copper Corp. have proposed a test (named Project Sloop* by the AEC) near Safford, Ariz. There, under a layer of volcanic rock more than 500 ft. thick, Kennecott test drillings have revealed a 2-billion-ton reserve of ore containing about 4/10 of 1% of copper...
After about eight months-enough time for radioactivity to decrease to safe levels-mining engineers will drill three holes from the surface to the top of the "chimney" of fractured rock. Through these holes, sulfuric acid will be poured into the chimney, where it will dissolve copper out of the rock. The solution, containing copper sulfate, will then drain into holes drilled at the bottom of the chimney and be pumped up through a shaft to a precipitation plant at the surface. There the solution will be processed to extract metallic copper, and the recovered sulfuric acid recycled for another...
Spreading Impact. In Utah, where Governor Calvin L. Rampton has twice intervened in the deadlocked negotiations between Kennecott Copper Corp., the nation's No. 1 producer, and the United Steelworkers union, the impact of the strike is spreading. Some equipment and chemical firms have laid off help, and state welfare officials are paying an estimated $4,000 a day to idled workers, including some strikers. Sales have fallen among railroads and truckers, and banks report a substantial drop in the clearings and debits that reflect the pace of the state's economy...