Ireland: Ecocem says that its slag cement products have saved 10Mt of CO2 emissions compared to regular cement since it started trading in 2002. It produces cement products from ground granulated blastfurnace slag (GGBS). It says its GGBS cement has a carbon footprint of 32kg CO2/t compared to 850 - 900kg CO2/t for Ordinary Portland Cement (OPC). The Irish company operates four plants in Europe with a production capacity of 2.4Mt/yr.