0721 Mining of uranium and thorium ores

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Includes

- mining of ores chiefly valued for uranium and thorium content: pitchblende etc.
- concentration of such ores
- manufacture of yellowcake [0]

Also includes

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Does not include

- enrichment of uranium and thorium ores, see 2013
- production of uranium metal from pitchblende or other ores, see 2446
- smelting and refining of uranium, see 2446 [0]

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