List of Figures 3.1 Secondary electron image (SEI) of zirconolite-rich form 3.2 Backscattered electron image (BEI) of pyrochlore-rich form 4.1 Linkages between tasks and sample test matrices 30 5.1 Depiction of the processing regime 5.2 Recommended process for preparing ceramic precursors 5.3 The ceramic immobilization process flow diagram 5.4 The overall baseline firing schedule 51