Show aa Radium lum Over-Exposure Over The national bureau of standards has developed a device which flashes a warning to persons who are in danger of over-exposure over to radium rays When exposure to radium radiation reaches the limit Umit deemed safe life by the bureaus bureau's experts experts experts ex ex- the device flashes ashes a red light and emits a buzzing sound The bureau bureau bureau bu bu- reau pointed out that in hospitals where large quantities of radium are handled It is Important to protect protect pro pro- protect the technicians from overexposure |