MarcellusGas-273422299598843904 aspwv1999-11-30T00:00:00-05:00November 30th, 1999|Twitter| U.S. #naturalgas producers go green, reports @UPI http://t.co/jn7OiXWp #ShaleGas #Marcellus #NatGas Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInWhatsAppTumblrPinterestVkEmail