When the Commission considered this issue they expressed their opinion on page 171 in the following words: Regarding the cost of produc- tion of the domestic industry the first point to decide is whether it should be the cost of the most efficient unit, the marginal unit or the representative unit in the industry. [...] The definition which we in the Plan- ning Committee had found to meet the case to a large degree relied upon three criteria, namely the scale of operation, the place of work and the equipment for the work, including both the tools and imp]ements as well. [...] The scope— "shall be confined to a consi- deration of the Report of the Select Committee and the matters referred to in that Report, or any alternative suggestions consistent with the principles of the Bill". [...] to ;-,(1d, and that is that whereas in the co,e of the larger industries the measure of protection is judged by means of the so called competitive costs of representative firms, in the case of the smaller industries. [...] If the Tariff Commission is to think of the national economy and the national prosperity, does it not mean that the Ministry of Commerce and the Minister of Commerce should be more alive to the situation?