We’ve come to think of fracing (or fracking) of only being around for a decade or so thanks to new technology and techniques. The truth is, the technology to safely unlock shale and other tight formations was developed back in 1949. It just took a good 50-60 years to perfect it. According to a 2012 study, hydraulic fracturing supports 2.1 million U.S. jobs and contributed $284 billion to the GDP. View the article in World Oil for the full report.