Word: shaft
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Dates: during 1960-1969
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...from overhead, the desired illusion that the dancer's motions cut through space was difficult to sustain. Instead, performers often looked as though they were progressing from one focus to another. Only two choreographers. Catherine Stern in Personna and Wendy Summit in Void tried different lighting. In Personna a shaft of light was thrown from stage left like a flashlight beam. In contrast Void was nullified by the trick appearance of the house lights, which remained on throughout most of the dance...
...Ford-Cosworth engine that may well give Ford a Grand Prix championship to go with the victories it has already won at Indianapolis, Le Mans and on the stock-car circuit. Constructed mainly of aluminum, with a single-plane crankshaft (instead of the usual V-8 two-plane shaft) that permits a simplified exhaust system, the engine took a year and a half to develop, and can actually be tuned, if desired, to put out as many as 420 horses...
Next year might actually bring some improvement if Henry is lucky enough to get a new set of golf clubs for Christmas-clubs with aluminum shafts. Like the steel tennis racket, the aluminum-shafted golf club is being touted as a breakthrough of science. For 15 years, club manufacturers have been trying unsuccessfully to improve on the now-familiar stepped steel shafts that replaced hickory in the 1920s. Fiber-glass shafts, for instance, are whippier than steel, but their extreme flexibility only tends to exaggerate flaws in a golfer's swing. Aluminum is more rigid than fiber glass...
...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...
...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 trip through the chimney...