P113 Detection of Underground Marlpit Quarries Using High Resolution Seismic B. Piwakowski* (Ecole Centrale de Lille) L. Drad-Lebeau (Institut National de l'Environnement Industriel) A. Kosecki (Ecole Centrale de Lille) & P. Safinowski (Ecole Centrale de Lille) SUMMARY This paper presents examples of application of high resolution reflection seismic for the detection and location of underground marlpit quarries in the region of haute-Normandie (north-west France) . Since some of these voids are unknown they represent a real danger both for population and building activities. The experiments are carried out at three sites with similar geological setting but differing in depth of


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