The inquiry is taking a long time, and inquiries of this kind are bound to do so. As the hon. Gentleman knows, it is prospective research, measuring the deterioration, if any, in people with unaffected hearing at intervals of about nine months. If these prospective investigations are to teach us anything, the inquiry must take some time. The question of an interim report is for the scientists carrying out the research. The Industrial Injuries Advisory Council is in touch with progress and it is, naturally, keenly waiting the outcome, as the hon. Gentleman is.