Oklahoma Quake Triggers Closing of Fracking Waste-Disposal Wells

Updated on
  • Magnitude 5.6 earthquake is state’s strongest since 2011
  • Cushing petroleum storage, pipeline facilities unscathed

One of the strongest earthquakes among many in Oklahoma since the introduction of hydraulic fracturing struck early Saturday near a complex of oil-storage facilities, leading state regulators to order the suspension of about 37 wastewater-disposal wells.

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