At the same time a National Mining Board consisting of representatives of all the interested elements, colliery-owners, managerial and technical staffs, miners, and other grades of workers, and coal consumers would be formed (the Mines Department already has a National Advisory Committee); the mining engineering element must be strongly represented, and provision must be made for first-class technical advice being always available. It would then be the business of the National Mining Board to work out its policy and decide upon the broad principles which it wishes to weave into the existing structure of the coal-mining industry by means of its power of granting leases. The following principles will readily occur to most people, and are supported by evidence which is, in my humble judgment, convincing, given before the various commissions and committees which have inquired into this industry during recent years. Firstly, More Amalgamation or Unification of Collieries. At present there are about 3000 pits owned by about 1500 companies or individuals, and producing an aggregate output of about 250 million tons per annum. Already there have been many large amalgamations. (i) Many fortunately situated small pits making a good profit will be found, but on the whole small collieries are economically unsound. In many cases at present the units are too small, having regard to the class of work being done, to the cost of up-to-date machinery and upkeep and to the variableness of the trade. Broadly I believe it to be true that the larger collieries are as a general rule more efficient than the smaller ones. (ii) In respect of co-operation in pumping, larger units would frequently make for efficiency and reduced cost; Sir Richard Redmayne, speaking of South Staffordshire before the Sankey Commission, said that we had already lost a large part of that coalfield through disagreement between neighbouring owners as to pumping. (iii) The advantages of larger units in facilitating the advantageous buying of timber, ponies, rails, machinery and the vast amount of other materials required in a colliery will be obvious to most business men.