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Boreholes

Certain knowledge of the environment for excavation is necessary to carry out underground works for which various means are used: superficial surveys, direct inspection by means of galleries, geophysical survey, tests on site and above all boreholes, consisting in perforating the environment to be examined, extracting unaltered or clastic samples of the ground and making tests inside the consequential hole. These can be geological-mining, geotechnical, hydrogeological and seismic exploration and assessment boreholes. Drilled holes for ground compaction, drainage, water catchments, petrol and gas, dissolution and leaching, etc., are also called boreholes.