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  1. 02/06/2022 · A 4.1-magnitude earthquake shook the San Francisco Bay Area early Thursday, June 2, the U.S. Geological Survey reports.. The 12-mile deep quake hit near Bay Point, six miles from Concord, at 5:07 ...

  2. 18/04/2020 · At the time of the 1906 San Francisco earthquake, many California municipalities had building codes, but none considered seismic effects… Professional organizations, particularly the Seismological Society of America, which formed in 1906, and later, the Structural Engineers Association of California, were persistent advocates of code provisions for earthquake-resistant construction.