Mining of uranium and thorium ores

07.21
Mining of uranium and thorium ores
This class includes:
- mining of ores chiefly valued for uranium and thorium content: pitchblende etc.
- concentration of such ores
- manufacture of yellowcake
This class excludes:
- enrichment of uranium and thorium ores, see 20.13
- production of uranium metal from pitchblende or other ores, see 24.46
- smelting and refining of uranium, see 24.46