Waste material such as toxic compounds, radioactive waste materials and spent nuclear fuel rods are encapsulated in a container system which is subjected to a hot pressure process to cause a protective powder material located around the waste material to form a dense matrix and function as a highly corrosion...http://www.google.com.au/patents/US4834917?utm_source=gb-gplus-sharePatent US4834917 - Encapsulation of waste materials
