Hazardous radioactive waste is compacted and cast into safely handled monolithic castings having a radiation barrier wall completely enclosing the radioactive waste by centrifugal casting processes in which the barrier wall may be either a pre-formed shell transported to the jobsite or it may be formed...http://www.google.fr/patents/US5075045?utm_source=gb-gplus-shareBrevet US5075045 - Biaxial casting method and apparatus for isolating radioactive waste
Biaxial casting method and apparatus for isolating radioactive waste