STUDY OF ENVIRONMENTAL RADIOACTIVITY LEVEL AND EPWEMIOLOGY IN TIN MINING AREA IN BANGKA ISLAND BANGKA-BELITUNG ISLANDS PROVINCE. Bambang Wahyudi; Ka. Sub Dit Pengamanan Dampak Fisik & Radiasi, Ditjen PPM & PL-Depkes. Bangka-Island has become the area contained with natural radioactive substance such as Uranium(U-238), Thorium (Th-232) and Kalium (K-40), and much of mineral substance such tin. Tin miningprocess producing {side products) such as slag, monazite, ilmenite and mud/tailing, given a negativeimpact potential to the public health and the environment, especially radioactive substance suchThoron (Rn-220) and Radon (Rn-222). Directorate General CDC & ER, MOR in cooperating withNational Nuclear Energy Agency and WHO conduct the assessment (Cross Sectional) to getinformation about the natural radioactive and the public health. The sample (200 person) are takenfrom several sub-district such as Belinyu, Pemali, Koba and Mentok. The concentration of naturalradio nucleic in soil are relative normal, while on drinking water for the Ra-226 unable condition atseveral location. The exposure of gamma radiation on two zone given the radiation dose annuallymore than recommended value (NBD). Radon concentration on bedroom is highest fromestroom/family room. Semi permanent is the most common type of house (80, 4 %), estroomventilation most of them 64,82% met with the requirement. Respondent knowledge regardingradiation still low, but knowledge regarding healthy living behavior found good. Respondentbehavior in opening bedroom and ~estroom window found good and most of them found smoking62,3 %. Ex in-conventional mining exploration had become potential breeding places for mosquito
