I do not propose to chop up the coalfields into mathematical sections and compulsorily unify the collieries in those sections. I am merely laying down the broad principle that to get the best out of our national asset the National Mining Board must bring about through its power of granting leases the formation of larger working units than at present usually exist. The geological and other conditions in the different coalfields vary enormously, and these form a very relevant factor in deciding upon the ideal unit of size. It is conceivable that in certain districts all the colliery-owners in the district, with the aid of the National Mining Board, would form a statutory company on the lines of the District Coal Board, described in the Report made by Sir Arthur Duckham as a member of the Sankey Commission. One advantage accruing from unification (to which recent events have given more prominence) is that it mitigates the tendency for the wages of the district to be just those which the worst situated and the worst managed colliery can pay and yet keep going, and no more. This tendency seems to be recognised and mitigated in the Agreement of June, 1921, on which the mines are now being worked. Secondly, Provision for Progressive Joint Control, that is, for enabling all the persons engaged in the mining industry either in money, in brains, or in manual labour, or a combination of those interests, gradually to exercise an effective voice in the direction of their industry. Some of the arguments for this principle appear to me to be (i) that, as indicated in my opening remarks, a sufficiently large number of the manual or mainly manual workers in the industry ardently desire a progressively effective share in the control of the industry; (ii) that this desire is natural and legitimate, having regard to the great increase in the education of the workers and the improvement in their status as citizens, and that so far from being repressed it should be encouraged; (iii) that it is the natural development of the system of Conciliation Boards and (occasionally) Pit Committees which has prevailed in the industry for many years, though more highly developed in some parts of the country than others. So far, these organs have been mainly used for purposes of consultation and negotiation; the time has come when with a more representative personnel, while not usurping the functions of a mine manager or, on a larger scale, the managing director, they must be developed so as to exercise some effective share in controlling the industry. (iv) While working conditions are not so dangerous and unpleasant as the public are sometimes asked to believe, the workers in this industry are exposed to an unusually high risk of injury and loss of life, and thus have a very direct interest in devising and adopting measures for increased safety. These measures nearly always mean expenditure, and thus an increased cost of working,