RT @AmChemistry: .@Shell’s decision to build Pennsylvania cr aspwv1970-01-01T00:00:00-05:00January 1st, 1970|Twitter| RT @AmChemistry: .@Shell’s decision to build Pennsylvania cracker affirms leading role of U.S. #chemical industry: https://t.co/AFBT703Wuu… Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInWhatsAppTumblrPinterestVkEmail