title: NRC final rule on expanded definition of byproduct material.
mesh_terms: D000398:Air Pollution, Radioactive / Q000331:legislation & jurisprudence; D006077:Government Agencies; D009590:Nitrogen Radioisotopes / Q000592:standards; D010104:Oxygen Radioisotopes / Q000592:standards; D010315:Particle Accelerators; D011850:Radioactive Waste / Q000331:legislation & jurisprudence*; D011868:Radioisotopes / Q000737:chemistry; D011883:Radium / Q000737:chemistry
chemical_list: D009590:Nitrogen Radioisotopes; D010104:Oxygen Radioisotopes; D011850:Radioactive Waste; D011868:Radioisotopes; D011883:Radium