National Geographic : 1965 Mar
ability to run indefinitely and its light weight make feasible some of the far-out ideas for space travel. For trips to Saturn and Jupiter, for example, small engines with low, contin uous thrust and little or no consumption of electric power may be the only answer." The Golden Triangle: Symbol of Renewal Pittsburgh's transition from a heavy-indus try center to a research-oriented city has been accompanied by startling physical changes.* Before my eyes a new city within a city has sprouted in the Golden Triangle. This is the crowded, 330-acre wedge of office buildings and hotels, theaters and department stores that tower on the pie slice of land where the Monongahela and Allegheny Rivers merge to form the Ohio (pages 360-61). 348 The face lifting had barely begun when I flew from New York on a warm spring day in 1955 to meet my new boss, Wally Forster, editor of the Pittsburgh Press. We stood in his office above the Boulevard of the Allies and looked across a wasteland of cleared ground-temporarily parking lots-to the first three tall buildings of Gateway Center. "You should have seen it a few years ago," he said. "It was an unholy mess. The old Wabash Railroad terminal stood right over there. The rest was a slum." Today the parking lots have given way to clean-lined skyscrapers of blue and green and gold. But perhaps the outstanding symbol of Pittsburgh's renewal is the Civic Arena, *See "Pittsburgh: Workshop of the Titans," by Albert W. Atwood, NATIONAL GEOGRAPHIC, July, 1949. ANSCOCHROMEBY CLYDEHARE FOR FORIUNt Looking like astronauts, two workers at Universal Cyclops Steel Corporation in Bridgeville lower a glowing bar of molybdenum steel into a forging ham mer. Their $6,000 suits protect against heat and supply air in a chamber filled with argon gas, which keeps oxygen and nitrogen from contaminating the metal. Fiery violet-gold slabs of steel fresh from the blooming mill await a cooling water spray outside the Jones & Laughlin plant. Forged in 2,400° F. temper atures, slabs would otherwise retain their heat for hours, even in frigid 8-below-zero January weather.