Radioactive element conclusions
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These statutes include, to varying degrees, naturally occurring and accelerator-produced radionuclides and machine-produced radiation. This conclusion is based on the fact that states have effectively regulated naturally occurring and accelerator-produced radioactive material in the past and continue to do so.
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Radioactive element is an element subject to spontaneous degeneration of its nucleus accompanied by the emission of alpha particles, beta particles, or gamma rays. All elements with atomic numbers greater than 83 are radioactive. Naturally occurring radioactive elements include radium, thorium, and uranium.
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