Radon is the leading source of lung cancer mortality after smoking in Chiang Mai, Thailand.
Finding a source of carcinogens is one of the important measures for preventing the cancer
risk for this region. Specific sites at Pa Miang, Doi Saket have the highest incidences of lung
cancer and have a combination of factors that influence indoor radon concentration. Our
study identified the sources of indoor radon within several houses. The results indicate that
geological and topographic characteristics, including active faults and mountain terraces …