This tee shirt design is for a band called Undark and the Radium Girls. The Radium Girls were a group of female factory workers who contracted radiation poisoning from painting watch dials with glow-in-the-dark paint at the United States Radium factory in Orange, New Jersey around 1917. The Radium Corporation, originally called the Radium Luminous Material Corporation, was engaged in the extraction and purification of radium from carnotite ore to produce luminous paints, which were marketed under the brand name ‘Undark’. The poisoning caused massive damage, especially to the worker’s jaws, as they were encouraged to sharpen the tips of their paint brushes with their tongues as they painted the watch dials.