RT @Energy_Briefing: Dave Spigelmyer gives an update on shal aspwv1970-01-01T00:00:00-05:00January 1st, 1970|Twitter| RT @Energy_Briefing: Dave Spigelmyer gives an update on shale development across the Commonwealth. “It is more than just an economic and wo… Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInWhatsAppTumblrPinterestVkEmail