089100 Mining of chemical and fertiliser minerals

This type includes:

• mining of natural phosphates and natural potassium salts
• mining of native sulphur
• extraction and preparation of pyrites and pyrrhotite, except roasting
• mining of natural barium sulphate and carbonate (barytes and witherite), natural borates, natural magnesium sulphates (kieserite)
• mining of earth colours, fluorspar and other minerals valued chiefly as a source of chemicals

This type also includes:

• guano mining

This type excludes:

• extraction of salt (see 089300)
• roasting of iron pyrites (see 201300)
• manufacture of synthetic fertilisers and nitrogen compounds (see 201500)