Note that a nuclear explosion does not happen in a nuclear meltdown due to the low fissility of the radioactive components.

All earthly materials that are the building-blocks of life contain a radioactive component.

However, this amount of nuclear material could pose a significant problem if used as the radioactive component in a dirty bomb.

Fission products are the principal radioactive component of nuclear fallout.

Mixed waste contains both radioactive and chemical components.

Because the machines have radioactive components and cost up to $1 million each, their use has been controversial.

The Energy Department's intention was to concentrate the radioactive components and mix them with molten glass.

Low-level waste excludes spent fuel rods and other highly radioactive components of nuclear power plants.

Many sewage plants say that they are incapable of removing the radioactive components of this waste, which is often released into major rivers.

The major radioactive component of these tailings is uranium-238, an isotope with a halflife of 4.46 billion years.