A newer technology leaves the surface untouched by pumping steam into the subsoil.

(d) Agreement on border cooperation in the study, development and protection of the subsoil (Minsk, 31 May 2001).

Belarus responded Yes the Intergovernmental Council of the countries of the Commonwealth of Independent States on the exploration, use and protection of the subsoil.

Groundwater means all water which is below the surface of the ground in the saturation zone and in direct contact with the ground or subsoil.

Treaty on the Prohibition of the Emplacement of Nuclear Weapons and Other Weapons of Mass Destruction on the Sea Bed and the Ocean Floor and in the Subsoil Thereof

The outer limits of the continental shelf of a State also define the Area (the seabed and ocean floor and subsoil thereof, beyond the limits of national jurisdiction), which is, together with its resources, the common heritage of mankind (article 136 of the Convention).