Operates crushing machine in which solid lumps of chemicals or other materials used in chemical and related processes are reduced to size suitable for milling or other further processing.
Operates machine in which solids or liquids used in chemical and related processes are mixed or blended according to formula to make chemical products.
This group includes crushers, grinder and mixers not elsewhere classified, for example those who operate fantype grinding or beating machines in the treatment of asbestos fibres or operate special machines in which plastic resin is compounded or pelletised.