British ghostwriter Moore traces the lives of more than a dozen American women who were employed as luminous watch-dial painters as early as 1917. She tells how these women, some barely in their 20s, were enchanted by high pay and the allure of the paint-s luminescent substance: radium. Carefully researched, the work will stun readers with its descriptions of the glittering artisans who, oblivious to health dangers, twirled camel-hair brushes to fine points using their mouths, a technique called lip-pointing. By the end of 1918, one out of six American soldiers owned a luminous watch, but the women had begun losing their teeth and entire pieces of their jaws. Moore describes the gruesome effects of radiation exposure on these women-s bodies, and she spares nothing in relaying the intense emotional suffering of their friends and families during subsequent medical investigations and court battles. In giving voice to so many victims, Moore overburdens the story line, which culminates with a 1938 headline trial during which a former employee of the Radium Dial Company collapsed on the stand and had to testify from bed. Moore details what was a -ground-breaking, law-changing, and life-saving accomplishment- for worker-s rights; it lends an emotionally charged ending to a long, sad book. (May)