Mining of lignite

This group includes: - Mining of lignite (brown coal): underground or surface mining, including mining through liquefaction methods; - washing, dehydrating, pulverizing, compressing and agglomeration of lignite to improve quality or facilitate transport or storage.

This group excludes: - Hard coal mining, see 05100 (Mining of hard coal); - Peat digging and agglomeration of peat, see 08920 (Extraction and agglomeration of peat); - Test drilling for hard coal mining, see 09900 (Support activities for other mining and quarrying); - Support activities for lignite mining, see 09900 (Support activities for other mining and quarrying); - Manufacture of fossil coal containing lignite, peat, see 19200 (Manufacture of refined petroleum products); - Work performed to develop or prepare properties for coal mining, see 43120 (Site preparation).