Before I address myself to the subject you have given me tonight, I feel that it may be of some interest to you if I recount very briefly the details of my own experience in industry, so that you may know the back-ground from which I speak. My first experience of industry was in coal. When f was a boy at school and at college, I used to spend my holidays and long vaca-tions in coal mines in Yorkshire, Durham, and Northumberland.