EARTHQUAKES: Drilling-related quakes have warning signs -- study Mike Soraghan, E&E reporter Published: Thursday, July 11, 2013 Scientists have found there might be warning signs before oil and gas-related earthquakes. Please subscribe to E&ENews PM to read the full story. Username: Password: Forgot your access codes? Recover them. Not a subscriber? Sign up for a trial. Ready to subscribe? Click here.