MarcellusGas-269451778855165952 aspwv1999-11-30T00:00:00-05:00November 30th, 1999|Twitter| Thanks to #Marcellus #ShaleGas, Pa. becoming an ‘energy superpower,’ via @PittsburghPG http://t.co/q7vNxs1V Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInWhatsAppTumblrPinterestVkEmail