These radioactive elements in minerals and ores originally found in the environment are commonly known as NORM – naturally occurring radioactive material. Some NORM materials require radiation control ...

Get Instant Summarized Text (Gist) Ancient hominins may have used naturally occurring volcanic rock spheres as tools for over a million years. These basalt spheres, found at Pleistocene sites in ...

Materials of this kind are commonly referred to as Naturally Occurring Radioactive Material or NORM. The International Basic Safety Standards (GSR Part 3) establishes requirements for industrial ...