FACT: Pa. shale production up from 747 million cubic feet in aspwv2015-02-19T00:00:00-05:00February 19th, 2015|Twitter| FACT: Pa. shale production up from 747 million cubic feet in 2006 to 4+ trillion cubic feet in 2014, via @TribLIVE. http://t.co/kbgs4jrFB7 Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInWhatsAppTumblrPinterestVkEmail