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		titre / headline : BAM Wallonie (Galère Génie Civil) légende / caption : BAM Wallonie (Galère Génie Civil) fonçage - microtunneling mots clefs / keywords : acier, batiment, bâtiment, béton, building, civil engineering, concrete, construction, driving, égout, épuration, purification, water-treatment plant, treatment, fonçage, génie civil, sewer, steel, tuyau, pipe, bam wallonie, cleaning, eau, engineer, engineering, environment, environnement, galère, ingénieur, microtunneling, microtunnelling, purging, sinking, stabilité, station, step, tunnelling, waste water treatment, water, photographe / photographer : Jean-Luc DERU,