title: Notes on low radioactivity lead for very low background shields.
mesh_terms: D000512:Alpha Particles; D004583:Electrons; D005720:Gamma Rays; D007854:Lead / Q000032:analysis*; D011835:Radiation Protection; D011868:Radioisotopes / Q000032:analysis*
chemical_list: D011868:Radioisotopes; D007854:Lead