State regulators unveiled a plan Tuesday to regulate two up-and-coming oil and natural gas developments in what experts call a proactive approach to mitigate felt earthquakes potentially caused by fracking. http://www.tulsaworld.com/business/energy/guidelines-to-mitigate-potential-fracking-earthquakes-in-new-oil-and/article_8548373f-c4bf-531a-bc34-f9603b2589b6.html