MarcellusGas-204980517597233153 aspwv1999-11-30T00:00:00-05:00November 30th, 1999|Twitter| RT @EIAgov: People are asking: How much natural gas does the U.S. have & how long will it last? http://t.co/ldROza8E #natgas #shalegas #oil #energy Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInWhatsAppTumblrPinterestVkEmail