If you have Amazon Prime this film is based in truth and taken from the book by Kate Moore. (The Radium Girls, The Dark Story of America's Shining Women)
It is both heartbreaking and heartening. It concerns the factory workers who were employed to paint the dials of clocks and watches, and who suffered radiation poisoning as a result. The company had known of the toxic effects of the radium. The physical effects on the girls were dreadful - and many died.
Their fight for justice changed history., but the cost to the women was appalling.