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USGS technician Coyn Criley installs seismographs

August 17, 2013 | 4:46 p.m. CDT
Coyn Criley, a United States Geological Survey physical science technician, installs seismographs Thursday in Hayward, Calif. The devices would be used to measure effects of the demolition of the 13-story Warren Hall on the California State University East Bay campus.


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