/Docs/G/Org-IAEA-Safety-GSR3-CmA/Sec/5_Existing_0.md
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²²²Rn and its progeny and ²²⁰Rn and its progeny, in workplaces other than those workplaces for which exposure due to other radionuclides in the uranium decay chain or the thorium decay chain is controlled as a planned exposure situation, in dwellings and in other buildings with high occupancy factors for members of the public;