Contributions of human errors to uncertainties in radiation measurements and implications for training

The currently available grab-sampling methods for determining working level were analyzed to determine the magnitude of the uncertainty due to several factors. Uncertainties relating to accuracy of the method and precision of measurement were found to contribute a significantly greater portion of the total uncertainty than human errors. Monitoring personnel in mines should be trained not only to obtain accurate estimates of miner radiation exposures but also to recognize, and when possible, to implement correction of situations which result in unnecessarily high radon progeny exposures