Extraction of salt

Extraction of salt
This class includes:
- extraction of salt from underground including by dissolving and pumping
- salt production by evaporation of sea water or other saline waters
- crushing, purification and refining of salt by the producer
This class excludes:
- processing of salt into food-grade salt, e.g. iodised salt, see 10.84
- potable water production by evaporation of saline water, see 36.00