ISIC 721—Research and experimental development on natural sciences and engineering

Where 721 sits

1. N Professional, scientific and technical activities
2. 72 Scientific research and development
3. 721 Research and experimental development on natural sciences and engineering

Contains 1 narrower code

• 7210 Research and experimental development on natural sciences and engineering

What 721 includes

• Mining of ores chiefly valued for uranium and thorium content: pitchblende etc
• Concentration of such ores
• Manufacture of yellowcake
• See class 7210

What 721 excludes

• Enrichment of uranium and thorium ores, see 2011
• Production of uranium metal from pitchblende or other ores, see 2420
• Smelting and refining of uranium, see 2420

721 in other systems