Not enough radium to be dangerous
The factory also insisted that It was impossible to absorb enough radium into the system to be harmful, since the amounts of this substance, or of mesothorium, used In the paints were so small, Dr. Martland, however, discovered discovered the girls were accustomed to lick their brushes, sometimes, as often as fourteen times for each dial face. One girt said she moistened moistened her brush twice for each figure. figure. If this Is true, it was possible possible for the girls to get as much as 2 grams of the paint in their mouths in the course of one day.