FRANCE. Seine-Maritime. April 1992. The metallic cages built by special units, are brought up from the base of the Tower where they are prepared, and hoised by crane to the inner cashing in which is already poured the concrete base (see also photo 18).Step by step, these casing and their inner infrastructure will rise to the final altitude of 214 meters and will take 2 years to build.Each metal rod will have to join its fixed counterpart with hardly 1 centimenter of latitude between the two bars.