The World Business Council for Sustainable Development (WBCSD) Cement Sustainability Initiative’s Getting the Numbers Right (GNR) database indicates producers reduced specific net carbon dioxide emissions per ton of cementitious product to 1,261 lb. (629 kg/tonne) in 2011 from 1,515 lb. (756 kg/tonne) in 1990. CSI membership includes all multinational companies with integrated North American operations.
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