Patent Number: 039869776
Section: claims

1. A method of disposing of at least partially radioactive waste material, comprising: intermixing such waste material with a liquid containing a setting agent consisting of an aqueous suspension of partially polymerized urea formaldehyde capable of forming with said waste material, upon mixing with a curing agent, a free standing hardened mass;  placing the resulting mixture in a container;  maintaining two spaced apart electrodes in contact with said mixture at or near the free surface thereof;  monitoring the resistance between said electrodes;  adding to said mixture a proportionate amount of a curing agent capable of hardening said mixture to a free standing hardened mass;  retaining said mixture in said container until said resistance reaches a maximum and slightly declines therefrom; and  burying said container and its solidified mixture for disposal. 2. A method of disposing of at least partially radioactive waste material as claimed in claim 1, wherein said waste material includes reactor evaporator bottoms. 3. A method of disposing of at least partially radioactive waste material as claimed in claim 1, wherein additional amounts of said setting agent and curing agent are mixed together and added to the mass in said container after said resistance reaches a maximum and declines therefrom, said additional amounts of setting agent and curing agent at least covering the free surface of said mixture.