Diaphragm Wall Owned main Equipment 
    BH - N : Hydraulic Grab, Kelly suspended operated by a
                 crawler crane, is generally used to carry out
                 excavation of size 2.5 m width and 0.6 m 0.8 m thick
                 panels.  
    BC 40 & BC 30 TWO HYDRO-MILL's : two soil/rock cutters
                 supported by a heavy crawler cranes with diesel 
                 powerpack to carry out excavation of size 2.8 m width
                 and 0.6 m, 0.8 m and 1.0 m thick panels and depth 
                 up to 50 m.
          The Hydro-mill is equipped with transducers to measure : 
                 - the cutter depth,
                 - the inclination of the excavation, both
                   perpendicularly and longitudinally to the alignment,
                 - the torque and the rotational speed of the drums.
           These transducers are connected to a readout/recorder
           unit located in the operator cabin. The Hydro-mill is
           designed to allow the adjustment of the deviations during
           excavation.
    Two Desander Plants : capacity of about 450 m 3 per hour
    Two Slurry : mixing and storage plants.