MarcellusGas-232155782987264000 aspwv1999-11-30T00:00:00-05:00November 30th, 1999|Twitter| #Marcellus Shale becoming top U.S. natural gas field, via @AP http://t.co/PKrbsrPl #NaturalGas #ShaleGas #AmericanEnergy Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInWhatsAppTumblrPinterestVkEmail