In man the study of the harmful effects in bone of internally deposited radioactive material has been made either on subjects who have been given radium compounds internally for medicinal purposes, a practice now discontinued, or on subjects who have accidentally ingested-radium, and sometimes mesothorium, while working as luminous-dial painters. The use of self-luminous paints for watch dials ...

ABSTRACT  Background: The essential constituents of cements like lime, silica and alumina are derived from earth’s crust in which radioactive elements like uranium, thorium etc are also present in varying amounts almost everywhere. These two elements are considered as the parent elements of uranium and thorium radioactive decay series in which radon and thoron are produced respectively as decay...

It was in 1913 that I first started work with radium in this Province. The supply which I had was very small and had been obtained for a special case. Later on, as success with this was maintained within the very small limits of its applicability Sir Edward Gait, Lieutenant-Governor of Bihar and Orissa, aided the work with a special grant in 1917, and in 1920 a scheme was put up which has resul...