“The survey is currently dismissing such events as being naturally-occurring. Sooner or later, the media will pick up on the real cause and create a genuine ruckus.”
– Oklahoma Geological Survey interim director Richard Andrews, in an email to a family member last year. An EnergyWire investigation found documents revealing scientists at the survey have suspected oil and gas activity is causing earthquakes since 2007, but they decided against going public to avoid offending the industry (Source)