Abstract

• Soil gas Radon, 222Rn, concentrations were measured in Buyt Myaung and Kalain gold mines of Shwe Kyin Township at Bago region. The soil samples were tested by using RAD7 radon technique detector. In each location of four different depths were taken for soil gas measurements, starting from the ground surface. It was found that the largest radon concentration was 29.5 ±1.37 Bqm3 at 6ft depth and smallest radon concentration was 11.2 ± 0.91 Bqm-3at 12ft depth from Byut Myaung gold mine. The largest radon concentration was 25.7 ± 1.49 Bqm-3 at 6 ft depth and the smallest radon concentration was 10.9 ± 0.68 Bqm-3 at 12 ft depth from Kalain gold mine. All the mentions were taken by using International Commission on Radiological Protection (ICRP) method for under or over safety concentration level that effects on human inspiration system especially lung's tissue. The results obtained from this study are not dangerous for that region.