Word: ore
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Dates: during 1960-1969
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...Congress and the AEC approve, scientists will drill a 20-in. shaft 1,200 ft. down into the ore deposit. They will then lower a 20-kiloton device to the bottom, plug the shaft, and set off a nuclear blast. From experience with previous tests, the AEC knows that the explosion will create tremendous pressures that will literally push the rock away from the blast center, fracturing it in all directions. The result will be a cavity about 200 ft. in diameter; the surface of the earth will quake, but the AEC does not expect any radioactive debris...
...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...
...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...
Project Sloop will cost an estimated $13 million, and could take 30 months from authorization through evaluation. If it works, technicians using nuclear devices as powerful as 100 kilotons may some day be able to process tens of millions of tons of ore containing copper that is now beyond man's grasp...
Three weeks ago, Mike McCuan, a popular 18-year-old Medford, Ore., high school senior, took the same deadly trip. In each case, Freon-12, an odorless, colorless cryogenic gas, may have frozen the victim's larynx, cutting off oxygen to the lungs; in McCuan's death, it also caused massive accumulation of fluids in the lungs...