Tin mining and silicosis in Cornwall.

In recent years pneumoconiosis among miners has increasingly attracted the attention of students of respiratory disease, and the urgent problem which it now presents in the South Wales coalfields, together with the importance of the industry involved, has produced a considerable literature dealing with pneumoconiosis and the environmental considerations relative to it. It is thought that the practice of tin mining may be less well known to workers in this field, and it is the purpose of this communication to outline the processes involved, especially as they bear upon the production of silicosis, and to review briefly the features of this " classical " silicosis.