Word: testing
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Dates: during 1970-1979
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...force exerted on passengers speeding around a 90-ft.-high loop reaches more than 3 Gs-enough to make a test pilot blanch. Since the big loops are generally on a track that deadends, riders have to repeat the entire process backward to return to the loading ramp. Traveling backward is foreign to people in a straightforward world, and there is considerable disorientation in whipping through a loop at high speed in reverse. The most hardened roller-coaster freak can climb out of a giant loop with wobbly knees and churning stomach...
...parks are a challenge for the sportsman. Mountain climbers can test their endurance...
Tiny Samples. Gove believes the direct measurement system, which requires as little as one-hundredth of the material needed for current dating tests, will eventually win wide acceptance. He and his colleagues have accurately determined some test samples to be 70,000 years old. With more work, they believe, they can push radiocarbon dating of tiny samples back to 100,000 years...
...group of oil magnates seeking recreation during the Depression and hoping to create employment commissioned Perry Maxwell to design Southern Hills. It was soon recognized as the premier test of golf in the Southwest and perhaps the most rigorous eighteen as far as driving goes in the nation...
...enervating heat compounded by the hot dustbowl winds that strafe the course make Southern Hills an even sterner test of stamina. The course must be watered in the middle of the tournament and on a single hot day will soak up 400,000 gallons of water...