Word: core
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Dates: during 1970-1979
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...have moved to the Core Curriculum, but "Principles of Economics" is once again the largest course this semester, with more than 1000 students enrolled...
...core doesn't need pumps to cool it if we lose power for any reason. We do have an emergency water injection system, but the air itself surrounding it should be enough," Harling said...
...fact, the core's products are cool enough to generate steam safely. Thomas Jones, MIT vice president for research, said yesterday the reactor body fills with hot but not scalding water. "The energy at that temperature isn't very useful, but it's very safe," he said. "In fact, if people had been energy-conscious then as they are now, we could have used the energy to heat these buildings...
Harling stresses that the system is hermetically sealed--even used-up fuel rods, which become highly radioactive waste, stay in the reactor core as long as possible to cool...
...road to El Dorado is mostly dark, deep, hot and dirty. The gold keeps getting harder to find and the tunnels and shafts grow deeper and longer. There are now 250 miles of underground cart tracks, and some shafts plunge so deep toward the earth's molten core that the temperature reaches 135° F. Expenses go on rising. It now costs $200 to extract each ounce of Homestake gold. That is high, but at current prices it leaves plenty of room for profit...