Word: tornadoproof
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Dates: during 1960-1969
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...just dug a big hole and built the school in it." Two stories deep, the building has 18 classrooms, all completely soundproofed. The air is changed every three minutes, and with the elimination of dirt, windows and exposed walls, maintenance costs are drastically reduced. The school, which is also tornadoproof, looks best from the air. Zooming in to land, SAC pilots see only a neatly landscaped plot beneath which 475 pupils peacefully study, full time...
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