Cal State University East Bay’s Warren Hall is demolished by implosion in Hayward, Calif., on Saturday, Aug. 17, 2013. The 13-story building which
Cal State University East Bay's Warren Hall is demolished by implosion in Hayward, Calif., on Saturday, Aug. 17, 2013. The 13-story building which opened in 1971 once housed administration offices and classrooms but has been empty for about two years. The California State University Seismic Review Board determined the building to be the most seismically vulnerable building in the CSU system. (Anda Chu/Bay Area News Group)