MarcellusGas-232467563043495936 aspwv1999-11-30T00:00:00-05:00November 30th, 1999|Twitter| RT @WPXI: Feds say Marcellus Shale to be most productive natural gas field in US: http://t.co/nlZr5sha Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInWhatsAppTumblrPinterestVkEmail