It’s frackers’ turn to quake as Oklahoma court lets woman sue over 2011 injury by Geoffrey Smith @FortuneMagazine July 1, 2015, 5:46 AM EDT E-mail Tweet Facebook Google Plus Linkedin Share icons Oklahoma’s Supreme Court has ruled that a woman injured in a 2011 earthquake can sue the two energy companies that she accuses of causing the quake, The Wall Street Journal reports. The ruling is further bad news for local energy companies, whose use of controversial hydro-fracturing or ‘fracking’ technologies has gone hand-in-hand with a surge in seismic activity over recent years. Scientific evidence increasingly suggests that the two are linked. To date, Oklahoma has lagged behind other states in allowing citizens to file such actions, a reflection of its importance to the state’s economy: the energy sector supports around one in five jobs, and has been responsible for two-thirds of the jobs created there since 2010, according to Oklahoma City University economist . Oklahoma produces 4% of the nation’s oil and 10% of its natural gas. Sandra Ladra of Prague, Okla., is suing Tulsa-based New Dominion LLC and Cleveland-based Spess Oil, two privately-held energy companies, over injuries sustained when her stone chimney collapse after a quake that registered 5.6 on the Richter scale. The Oklahoma Supreme Court Tuesday overruled a decision by a lower court that had handed jurisdiction of the case to the state’s energy regulator, the Oklahoma Corporation Commission. Ladra maintains the quake was caused by the injection of waste water into wells, an integral part of the fracking process. The WSJ reported that Oklahoma experienced 585 quakes registering over 3.0 on the Richter scale in 2014, more than the total number of quakes in the previous 30 years.