#Marcellus put Pa. on the map, but other layers have potenti aspwv2015-07-13T00:00:00-04:00July 13th, 2015|Twitter| #Marcellus put Pa. on the map, but other layers have potential far into the future. http://t.co/boVMDV67VG http://t.co/DbH3M9jaWz Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInWhatsAppTumblrPinterestVkEmail