Residents worry about potential earthquakes and tap water tainted with natural gas . The state has been under a moratorium on fracking since 2011, but the ban was lifted in January after an earthquake rocked Oklahoma City last month. U.S. protesters have flown to the UK to join local demonstrators . UK energy minister : 'If there is any risk it will be stopped immediately '
Residents worry about potential earthquakes and tap water tainted with natural gas . Energy company has not applied for permission to frack , but protesters try to block its work . U.S. protesters have flown to the UK to join local demonstrators . UK energy minister : 'If there is any risk it will be stopped immediately '