Omya partners with Lafarge Ciments, which is a member of the Holcim Group, to support the development of low-carbon cement and concrete solutions in France, effective from October 1, 2026. The collaboration is on the reduction of the clinker content in cement by micronized limestone (photo: Calcium-carbonate production plant by Omya in Orgon in Southern France) The announced alliance between Omya and Lafarge Ciments confirms that limestone is no longer considered just as an addition, but as one of the major levers for the development of low-carbon cements.