Abstract

• Soil gas Radon, 222Rn, concentration was measured in kalian gold mine of Shwe Kyin Township at Bago Region. Seasonal determination of radon concentration in soil samples were tested by using RAD 7 radon technique detector. Three different seasons (summer, rainy and cold) in each level of five different depths (2.5 ft, 5 ft, 7.5 ft, 10 ft and 12.5 ft) in the same place were taken for soil gas measurement, starting from the ground surface. Based up on results, the cold season has the most radon contents in three seasons. The measured results were accepted by International Commission on Radiological Protection (ICRP) standard. The results obtained from this study are not dangerous for workers in that area