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Unlike a pure-oxygen system, which requires a cabin pressure of only 5 lbs. per sq. in., a two-gas system would have to approximate the sea-level pressure on earth-14.7 lbs. per sq. in.-to ensure that enough oxygen reached the astronauts' lungs. If a small meteorite should puncture the skin of a ship containing a nitrogen and oxygen atmosphere and cause rapid decompression, the astronauts on board would develop a painful and perhaps fatal attack of the "bends"; nitrogen dissolved in their bodies would come out of solution, forming gas bubbles in tissues...
Another Thermometer. One Marine who carries that philosophy to perfection is Lieut. Colonel William Corson, 41, a former Naval Academy professor, economist and engineer who controls 50 sq. mi. of jungle west of Danang. After months of patrolling and night ambushes, Corson's 1,500-man battalion set up what he likes to call "my laboratory for capitalism." The first step was to engage the interest of the villagers, which Corson achieved by the un-Clausewitzean technique of teaching his men the local game: co tuong, a variant of chess that uses "elephants, cannon and 14th century infantry tactics...
Shrinking Sanctuaries. Once the Iron Triangle is thoroughly scorched and cleared of all civilians, it will be a free bombing zone, where anyone who moves in the 25-sq.-mi. area will automatically be fired on as a Viet Cong. But there will be little for the Viet Cong to go back to: if the U.S. has its way, even a crow flying across the triangle will have to carry lunch from now on. Moreover, the U.S. intends to spend much of 1967 scorching the enemy's earth all over Viet Nam. Next likely candidates are War Zone...
...operating in the three provincial districts south and east of the city. Last week, to clear the Communists out of the area to Saigon's north, American forces launched the largest offensive of the war to date, sending 28 battalions and 34 batteries of artillery into the 25-sq.-mi. wedge known as the Iron Triangle, a notorious Communist strong hold ever since the days of the French...
...M.B.T.A. has anticipated abandoning the yards for many years but has been delayed in finding a replacement. Under a master plan, released last year, the agency would extend the Harvard Sq. line into North Cambridge and probably move the Bennett St. facilities to a new location in that part of the City...