benne-forage

CONT: bâtilong : Dispositif constituant une extension de la benne-forage et permettant de creuser à de grandes profondeurs.

CONT: 1. Continue boring with an auger or boring bucket depending on the soil condition ... 2. Carry out boring until the designed depth is achieved. 3. If hard material is encounter during boring, use chisel or rock tools to penetrate into the hard stratum...