Abstract
A description is given of the field application of a technique using CR-39 and LR 115 detectors to determine alpha recoil implanted 210Po surface activity on domestic glass artefacts in dwellings. These investigations took place in two small stable rural communities in uraniferous areas of Yugoslavia where between 32% and 74% of contemporary indoor radon levels were found to be above the commonly used Action Level of 200 Bq m −3 and individual levels as high as 8700 Bq m −3 were measured. The 210Po data is used to retrospectively estimate radon exposures in these communities. Comparisons between the retrospectively estimated radon exposures and those being received at present are made.
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