text: The Radium Dial Company was started in 1917 and was in full production of painted dials by 1918. The company was a division of the Standard Chemical Company based in the Marshall Field Annex building in Chicago. In 1920 the company relocated to Peru, Illinois to closer proximity to the clock manufacturer and major customer, Westclox.
  By 1922 the company had moved to a former high school building at 1022 Columbus Street in Ottawa, Illinois where it remained until the mid-1930s. At the highest point in production (around 1925), the Radium Dial Company employed around 1,000 young women who turned out around 4,300 dials each day.
  The company was headed by Joseph A. Kelly Sr. Kelly opened up a new corporation called Luminous Processes Inc. a few blocks away from the Radium Dial Company in Ottawa, Illinois shortly after closing down the Radium Dial Company. Luminous Processes Inc. continued producing fluorescent watch dials powered by radium radioactivity until 1978.