So as to reach these goals the NOM has launched specific programs since 1990, which target the establishment of :

• Governorates’ maps of useful substances
  Objectives :
  • introducing Tunisia’s systemic inventory of the non-metallic useful substance in the form of map files in 1/2000000 scale.
  • Endowing Tunisia with a database about useful substances (sand, clay, betonies, gypsum…etc)
  Elaborated documents:
  • Governorates’ maps in 1/200000 scale of the useful substances.

• Gravimetric maps
  Objectives :
  • Providing the national territory with a gravimetric coverage.
  • Elaborating databases for all the raw gravimetric measures as well as the treated ones.
  • Putting this database and maps at users’ disposal in a variety of domains (mining-research work, natural risks, petroleum research, and civil engineering).
  Elaborated documents :
  • Multi-scale maps (1/50000, 1/200000, 1/500000) that elicit six types of anomaly: oguer, regional, second derivative, vertical gradient and analytic signal.
  • Gravimetric and georeferential database.
  
  
• Geochemical maps
  Objectives :
  • Endowing the national territory with a geochemical coverage.
  • Elaborating a database for all the geochemical measures, raw as well as treated.
  • Putting this database and the geochemical and referential maps at users’ disposal in a variety of domains (mining research work, natural risks, petroleum research and civil engineering).
  Elaborated documents :
  • Mono- and multi- 1/500000 maps for the geochemical anomalies.
  • Geo-chemical and referential database and mono-/pluri- elementary graphic documents in different scales.
  
  
• Natural-risk maps
  Objectives :
  • To draw seismicity, flood, erosion and desertification maps for the purpose of risk prevention and security measures especially in the most vulnerable areas.
  • To create mid- and long-term-data files that encompasses natural risks.
  • To set up a national database on the different natural risks that occurs in the country.
  Elaborated documents :
  • Thematic-natural-risk maps: landslide, seismicity, inundation, erosion, desertification… etc