§ Dr. ThomasTo ask the Secretary of State for Defence what is the annual expenditure committed by his Department to resolving outstanding problems of verification of a comprehensive nuclear test ban treaty.
§ Mr. Archie HamiltonThe most important verification technology is seismology. Government expenditure on unclassified work in this area for the current year is £1.5 million. The Government also undertake classified work in related areas, details of which cannot be revealed on grounds of national security.