Question: What kind of substance does Radium Girls and United States Radium Corporation have in common?
Sentence (from "United States Radium Corporation"): After initial success in developing a glow-in-the-dark radioactive paint, the company was subject to several lawsuits in the late 1920s in the wake of severe illnesses and deaths of workers (the Radium Girls) who had ingested radioactive material.
Relevant evidence: Yes