Texas oil and gas regulators say there is no evidence that a record 4.0 earthquake last month in the northern part of the state was caused by injecting oilfield waste into underground wells.
Associated Press, San Diego Union-Tribune Nation
Fri, 06/12/2015 - 2:00pm
Texas oil and gas regulators say there is no evidence that a record 4.0 earthquake last month in the northern part of the state was caused by injecting oilfield waste into underground wells.