George Mitchell, Billionaire Behind U.S. Shale Boom, Dies at 94
F. Carter Smith/Bloomberg
George P. Mitchell, the Texas billionaire who pioneered shale-drilling techniques that triggered a renaissance in North American oil and natural gas production, receives the inaugural IHS CERA Lifetime Achievement Award at the 2011 CERAWEEK conference in Houston in a March 9, 2011 file photo. Mitchell died on July 26, 2013. He was 94.