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The Los Angeles Dam Story
Illustrated description of structural engineering behind the near-failure of the Lower San Fernando Dam during the 1971 San Fernando earthquake (magnitude 6.7) and the replacement dam (the Los Angeles Dam), which in 1994 "survived an almost identical earthquake with little damage." From the U.S. Geological Survey (USGS) Earthquake Hazards Program.
http://quake.usgs.gov/prepare/factsheets/LADamStory/
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