Word: shafting
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...whistle for the last call to board. There was a stampede to the steep, 14-ft.-wide stone stairway leading down to the platform, whose steps were covered with snow that had drifted in through the station's broken roof. Someone slipped, and in seconds the stair shaft was corked with screaming, struggling people. When the rush was over, 31 were dead, eleven of them children, in the worst railway disaster in Korean history...
Misery lit the bloodshot eyes of the black woman in tattered dress huddled on her knees near the mine shaft at Coalbrook North. As a white man passed, she clutched his legs and moaned, "Baas, please, baas, tell me where my man is." Five hundred feet below, her man, and 439 others, all but six of them Africans, were trapped behind thousands of tons of rock and coal in a half-mile-long gallery of No. 10 section...
...water pipe that seemed to be intact, and a weary worker came to the surface shaking his head, saying, "It will take us a week to get near them." All through the night, womenfolk, some wailing, others grimly tightlipped, stood clinging to a fence near the shaft, their eyes glued to the huge lift wheels whose movements signal an ascending cage. The Salvation Army held services of prayer for the grieving; the services were segregated, one for white relatives and one for blacks...
Next morning, the repaired ventilators were pumping air back into the tunnel, but now the diggers were hampered by water, rising chest-high at the rock face. Grimly, nine foremen ordered the rescue teams out for fear they, too, might be trapped if the water-weakened shaft walls collapsed. Now the only hope was a special high-speed drill rushed down from the northern Transvaal 300 miles away to punch a 13-in. air and food hole straight down from the surface to the entombed men. But the drill hit solid rock 80 feet down, slowing...
...volume and then decrease. When a cavity, still small but growing, passes the intake port leading to the carburetor, it draws in fuel and air. Then the cavity decreases in volume, compressing the mixture. The engine's single spark plug fires; the exploding gas pushes the rotor and shaft. At the end of the power stroke, a corner of the rotor uncovers the exhaust port, and the burned gases are swept out of the engine. Meanwhile, two other cavities have been formed and are passing through the same cycle. Maximum shaft speed is 17,000 r.p.m., but the rotor...