Breadcrumb Home Challenges for the surface and sub-surface Challenges for the surface and sub-surface Share BRGM, the French geological survey, is France’s reference public institution for Earth Science applications. Its activity is organised around 6 major societal issues. Section summary Geology and subsurface modelling Groundwater and resource preservation Risks linked to the ground and subsurface Mineral resources and responsible supply Subsurface energy and decarbonisation Digital technology for Geoscience