CEMEX has been contributing to the Grand Paris, the largest infrastructure project currently under development in France. It is supplying a wide range of building materials, as well as technical and logistical expertise. It started with foundations and civil engineering of a section of the Grand Paris Express. CEMEX supplied over 55, 000 m3 of specially formulated concrete to build the cast walls, technical and slab floors for the extension of lines 4 and 15 of the Paris underground, an extension that is expected to serve 60 000 passengers daily by 2020. CEMEX also participated in several phases of the ZAC Clichy Batignolles Development Area, a project that will reconfigure 54 hectares of inner Paris. For two of the first stages of this project, CEMEX provided beams and construction techniques for 30 000 m2 of area under construction, using just-in-time concrete pouring to ensure uninterrupted pumping inside a heavy-traffic, built-up area.