Uranium.

A breeder reactor can use either Uranium, Plutonium, or mixed Transuranic elements for fuel. Depleted Uranium or Thorium is used as the breeding blanket. Periodically the breeding blanket is changed: the old one reprocessed to make new fuel.

Most nuclear power stations use uranium enriched to 3% uranium-235 isotope. The nuclear power stations in France include some reprocessed plutonium mixed with the enriched uranium.

A small number of nuclear power stations were designed with fast neutron breeder reactors and used uranium enriched to as much as 93.7% uranium-235 isotope. As more of the uranium-238 (or thorium-232) in the breeding blanket was transmuted to fissionable plutonium (or uranium) isotopes, the breeding blanket material would be reprocessed and these fissionable isotopes would be used to replace the original spent uranium. But only a small number of such nuclear power stations were built and the system for reprocessing of the breeding blanket material was not set up.

how to know Plastic granules are reprocessed or virigin. what is a test for the same.

Gangue is sometimes reprocessed for the sake of obtaining extra minerals. This can be done with both the new and old methods in mining.

Reprocessed steel cents lack detail and appear to be filled in some even show wear and corrosion.