title: Permissible levels for occupational exposure to radon daughters.
mesh_terms: D000512:Alpha Particles; D006801:Humans; D007854:Lead; D008168:Lung; D008452:Maximum Allowable Concentration; D008906:Mining; D009787:Occupational Medicine; D011059:Polonium; D011829:Radiation Dosage; D011868:Radioisotopes; D014501:Uranium
chemical_list: D011868:Radioisotopes; D007854:Lead; D014501:Uranium; D011059:Polonium