15. Power to cause investigation to be made into scheduled industries or industrial undertakings. Where the Central Government is of the opinion that- (a) in respect of any scheduled industry or industrial undertaking or undertakings- (i) there has been, or is likely to be, a substantial fall in the volume of production in respect of any article or class of articles relatable to that industry or manufactured or produced in the industrial undertaking or undertakings, as the case may be, for which, having regard to the economic conditions prevailing, there is no justification; or (ii) there has been, or is likely to be, marked deterioration in the quality of any article or class of articles relatable to that industry or manufactured or produced in the industrial undertaking or undertakings, as the case may be, which could have been or can be avoided; or (iii) there has been or is likely to be a rise in the price of any article or class of articles relatable to that industry or manufactured or produced in the industrial undertaking or undertakings, as the case may be, for which there is no justification; or (iv) it is necessary to take any such action as is provided in this chapter for the purpose of conserving any resources of national importance which are utilised in the industry or the industrial undertaking or undertakings, as the case may be; or (b) any industrial undertaking is being managed in a manner highly detrimental to the scheduled industry concerned or to public interest]; the Central Government may make or cause to be made a full and complete investigation into the circumstances of the case by such person or body of persons as it may appoint for the purpose. | 
