Word: tunnell
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Dates: during 1930-1939
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...region promptly multiplied to 3,000,000, he set out to fetch them the Colorado at a cost of $200,000,000. In charge of Engineer Frank Elwin Weymouth, the job gave work to 45,000 men, fun and head aches to no less than 300 engineers. The last tunnel was holed through by blasting last month. Expectations were At the rubble would be cleared by next week, that by next summer Colorado River water would start pouring into Cajalco Reservoir, thence to Los Angeles and twelve other thirsty California towns...
...food for the five houses connected by the main tunnel system is prepared in an elaborate kitchen, situated under Kirkland and Eliot Houses, with separate units used for the various phases of the Harvard cuisine. The moats and vegetables are prepared in separate kitchens and a complete bakery supplies the entire university with bread and desserts...
About 130 feet in, the ceiling dipped into the water, forming what speleologists call a "siphon." Unwilling to stop, Casteret inhaled enough breath for two minutes, dived into the tunnel, ready to turn back after one minute if he did not reach the siphon's end. It was short, however, and he soon emerged into another grotto. This was the beginning of explorations in the Grotte de Montespan which eventually led to the discovery of subterranean galleries inhabited by the Magdalenian cave dwellers of 20,000 years ago. Some of the Magdalenian clay images of animals were riddled with...
...disciples have had assistance from three companies interested in building more dirigibles. These are Goodyear Tire & Rubber Co., whose Goodyear-Zeppelin Corp. built the Akron and Macon, Carl B. Fritsche's Metalclad Airship Corp. in Detroit, and Interocean Dirigible Corp., recently organized at Richmond to develop a new "tunnel ship" (with propellers mounted tandem in a tunnel through the ship's centre...
...difficulty of substratosphere flying is that in the thin upper air a propeller blade has to take bigger or more frequent bites of air to maintain the ship's speed and altitude. By increasing the pitch of propeller blades bigger bites are possible, but wind-tunnel experiments have indicated that any propeller's effectiveness reaches a limit when the speed of its blade tips surpasses the speed of sound (at sea level, 780 m.p.h.; at 20,000 ft., 500 m.p.h.). When propeller tips reach the speed of sound, they find themselves in a sort of dead heat with...