论文部分内容阅读
位于斯洛伐克东部地区的 Roznava 铁矿(R 矿)和 Nizna Slana 矿( N 矿)均有100余年的采矿史。地方当局1980-1989年的卫生学监测资料表明,两矿区由氡及衰变物产生的α射线平均水平分别为0.13工作水平(WL)和
The Roznava iron ore (R mine) and the Nizna Slana mine (N mine) in Eastern Slovakia have more than 100 years of mining history. According to the hygiene monitoring data of local authorities from 1980 to 1989, the average levels of alpha ray produced by radon and decay materials in the two mining areas were 0.13 working level (WL) and