Abstract
Abstract Radon is posing a deep concern to human life from health-hazard point of view, especially to the uranium mine-workers and people living near the radioactive zones. Exposure of high doses of radon can cause lung cancer to the people. The present investigations are carried out in about 20 domestic places of a radioactive site in Himachal Pradesh, India for a year. The levels of radon activity are found to be quite high, giving an annual exposure-dose that crosses the safety limits set by various agencies. It is found that radon activity increases in winter season in comparison to summer season due to the reduced ventilation. The average values in summer and winter are found to be 977.17 Bq/m3 and 1174.01 Bq/m3 respectively, exposing the people to an average annual dose of 47.09 mSv.
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