Word: tunneling
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Dates: during 1930-1939
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...report reached the President from Captain Sagel who by this time had arrived at the mine with the Governor of Chiriqui Province. He sent word that Joanes van Steck, one of the three prospectors-the other two were missing-had volunteered to lead the way into the gold-choked tunnel, where he had then inexplicably shot himself. There was nothing to worry about, said Sagel, because a Czechoslovak worker in the tunnel testified that he had seen the gold. The next report to reach the President, from Chief Pino, was slightly less encouraging. Arrin Thorpe, one of the two missing...
...this point Captain Sagel sent yet another message saying that so far as he could see the "abandoned mine tunnel" in which the gold was supposed to have been discovered was "nothing but a cleft in the river bed" and quite empty...
...Chiriqui Province chartered planes, flew to the mine to investigate the discovery while the Government, which under its buried treasure law is entitled to half the prospector's find, rushed a police guard to the scene to control a stampede of treasure-hunting natives. Authorities believe that the tunnel belonged to the almost-legendary La Estrella mine, worked by the Spanish conquerors. Fabulously rich, it became "lost" in the passing of four centuries. Indians, outraged by the cruel treatment of the Spaniards, are supposed to have ambushed a mule-drawn treasure train, killed the white men and buried them...
...freeflight tunnel is a cylinder which may be tilted at a normal airplane glide angle. On the bottom rests a small model of a commercial plane which is to be tested for such things as controllability. As the air rushes into the tunnel, the model takes off, flies completely free. Trailing from it is a thread-like copper wire through which the operator can control ailerons and rudders, see how the ship obeys them...
...gust tunnel is important because all airplanes experience their maximum loads when they encounter sudden gusts or "bumps." The gust tunnel faces upward and a small model is shot across 'its top at 50 m.p.h. Accelerometers and a fast camera record how it reacts. Gusts are also being measured by pocket-size gadgets called V-G recorders installed on many airline transports. The China Clipper has one, for example, which indicates that maximum gust velocity over the Pacific averages 30 ft. per sec. up & down...