An improved radiation shielding material and storage systems for radioactive materials incorporating the same. The PYRolytic Uranium Compound (“PYRUC”) shielding material is preferably formed by heat and/or pressure treatment of a precursor material comprising microspheres of a uranium compound,...http://www.google.com.au/patents/US6960311?utm_source=gb-gplus-sharePatent US6960311 - Radiation shielding materials and containers incorporating same
