EEIA: Shale oil and gas supply chain sectors supporting 450,000+ U.S. jobs

EEIA: Shale oil and gas supply chain sectors supporting 450,000+ U.S. jobs http://www.pennenergy.com/articles/pennenergy/2014/05/eeia-booming-shale-oil-and-gas-supply-chain-sectors-supporting-450-000-u-s-jobs.html?cmpid=EnlResearchMay212014