Nowadays augmented risk of a lung and larynx cancers as a result of the exposure on radon is not onlyknown fact, but also the most important effect of the influence of the natural radioactivity on thegeneral public. There is no doubt, that quite often miners are more endangered by enhanced radonexposures as other members of the society.Upper Silesia is the region of the extended underground mining industry, mainly of a hard coal, butalso the metal ore mining.
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