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Oklahoma quakes linked to fracking-wastewater disposal wells
Oklahoma quakes linked to fracking-wastewater disposal wells

The Oklahoma Geological Survey said Tuesday that it is “very likely” that most of the state's recent earthquakes were triggered by the subsurface injection of wastewater from oil and natural gas drilling operations. Geologists have been studying hundreds of earthquakes that have shaken the homes and the nerves of residents in central and north-central Oklahoma, where the pace of oil and gas drilling has accelerated in recent years. A statement released by state geologist Richard D. Andrews and Dr. Austen Holland, state seismologist, said the rate of earthquakes and geographical trends around major oil and gas drilling operations that produce large amounts of wastewater...

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