RT @ColumbiaUEnergy: SIEMINSKI: #Shale remains the dom. sour aspwv2015-11-23T00:00:00-05:00November 23rd, 2015|Twitter| RT @ColumbiaUEnergy: SIEMINSKI: #Shale remains the dom. source of US #natgas production growth. Marcellus is extremely productive. Likely t… Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInWhatsAppTumblrPinterestVkEmail