asked the Lord President of the Council whether the Medical Research Council has yet completed its preliminary inquiries into the possible effects of supersonic sound upon the health of workers in the manufacture of turbo-jet aero-engines; and whether a programme of further research has been arranged.

I am informed that the matter is under investigation by the Air Ministry. In view of this the Medical Research Council have not proceeded, with any investigations of their own.

Is my right hon. Friend aware that there is already in my constituency a case of illness from this cause, and grave disquiet amongst the workers in this industry, and will he, therefore, do everything possible to expedite these inquiries?

I will keep that in mind, and it will no doubt be noted by the Air Ministry who are concerned with this matter.