Oil drilling caused killer earthquake in boomtime California, scientists suspect

Long Beach quake of 1933 in which up to 120 people died is among several possibly linked with early extraction methods Several damaging Los Angeles-area earthquakes of the 1920s and 1930s, including the deadliest ever in southern California, may have been brought on by oil production during the regions drilling boom of that era, US government scientists have reported. The findings of a possible link between oil extraction and seismic events in the LA basin do not apply to modern industry practices but suggest the natural rate of quake occurrences in the region may be lower than previously calculated, theā€¦

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