ABSTRACT
Working with the US delegation presented problems for the UK. By the end of September 1958 the UK had as a result of its own testing efforts acquired sufficient new scientific information to be able to accept a testing moratorium for a year subject to review. The large hole theory' was to haunt the remainder of the negotiations and never really went away as an evasion possibility throughout the test-ban debates right up until the 1990s. The Americans did not want to reveal the large hole theory' to the Russians because it involved a good deal of information concerned with concealment, which may or may not be known to them and which would be of military value if the negotiations broke down altogether. There is no evidence for either AWRE or MOD opposition to Macmillan's energetic pursuit of a test- ban treaty.
