All who are interested in the subsurface, could, free of charge, view and request data on DINOloket of TNO, Geological Survey of the Netherlands. These data originate from both TNO's DINO repository and BRO (Subsurface Key Register). Read more about this here (Dutch only). For more information about the Mining Act visit NLOG.
DINOloket is used for instance by engineering and consultancy firms, regional water authorities, provinces, municipalities, Rijkswaterstaat, construction and contractor companies, architects, conservation organisations, schools, universities and civilians.