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吸入放射性核素氡及其子体,构成了矿山特别是铀矿山最重要的职业性照射。铀矿工由于长期接受放射性照射而致癌的问题,早已引起人们重视。美国1950～1971年死于肺癌的铀矿工人为125人;加拿大1955～1974年死于肺癌的铀矿工人为81人.据不完全统计,我国核工业部矿冶局系统的矿工,也有20余例发生肺癌;湖南郴州地区的一些有色金属矿山,也出现矿工肺癌病
Inhalation of radon and its daughters forms the most important occupational exposure for mines, especially uranium mines. Uranium miners have long drawn great attention due to their long-term exposure to radioactive radiation. The number of uranium miners who died of lung cancer in the United States from 1950 to 1971 was 125. The number of uranium miners who died of lung cancer in Canada from 1955 to 1974 was 81. According to incomplete statistics, there are more than 20 miners in the Mines and Metallurgical Bureau of China’s Ministry of Nuclear Industry Occurrence of lung cancer; some non-ferrous metal mines in Chenzhou, Hunan Province, there are miners lung cancer