In dictionaries:
Naturally occurring radioactive material
Naturally occurring radioactive materials and technologically enhanced naturally occurring radioactive materials consist of materials, usually industrial wastes or by-products enriched with radioactive elements found in the environment, such as uranium, thorium and potassium and any of their decay products, such as radium and radon.
Theft of radioactive material in Tammiku
The theft of radioactive material in Tammiku took place in 1994.
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