MarcellusGas-210046219282681857 aspwv1999-11-30T00:00:00-05:00November 30th, 1999|Twitter| .@CaterpillarInc, @WestportDotCom Team Up For #NaturalGas Engines, via @IBDinvestors http://t.co/OGXxDLGp #CNG #ShaleGas Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInWhatsAppTumblrPinterestVkEmail