I agree with my hon. Friend that tritium plays an essential part in the manufacture of nuclear weapons. It has to be renewed from time to time to maintain the existing stockpile. I can, however, assure my hon. Friend that all the environmental and safety aspects of the new plant will be assessed and authorised by the Nuclear Installations Inspectorate and the Health and Safety Executive of the Scottish Development Department, and that we have completely followed the normal statutory requirements with regard to any planning permissions required.