Railroad Commission of Texas (RRC) Executive Director Milton Rister plans to leave the commission on Aug. 31, he told RRC commissioners in a letter Wednesday. He has been in the position for nearly three years. Rister was appointed in 2012 after serving in former Texas Gov. Rick Perry's office, where he was director for administration since 2010 (see Daily GPISept. 12, 2012). "The Railroad Commission will immediately begin a nationwide search for a new executive director," RRC Chairman David Porter said. "This search will focus on a candidate with strong leadership capabilities and technical expertise, so that we may continue building on our legacy as the nation's preeminent energy regulatory agency. I want to thank Milton for his service and wish him the best in the future."