Protection from the daughter products of radon through the use of a powered air-purifying respirator.
D001729:Bismuth; D005374:Filtration; D007854:Lead; D011059:Polonium; D011835:Radiation Protection; D011886:Radon; D012122:Ventilators, Mechanical / Q000295:instrumentation*
D007854:Lead; D011059:Polonium; D011886:Radon; D001729:Bismuth