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- Mining of earth colours (ochre including red oxide). (6)
- Mining of potash bearing salts/minerals; borate minerals and other fertiliser and chemical minerals n.e.c. (6)
- Mining of native sulphur or pyrites and pyrrhotites valued chiefly for sulphur (2)
- Mining of natural phosphate including apatite minerals. (2)
- Mining of fluorspar (1)
- Mining of barytes (1)