Extraction of crude petroleum
Extraction of natural gas
Deep coal mines
Mining of lignite
Open cast coal working
Mining of iron ores
Mining of other non-ferrous metal ores
Mining of uranium and thorium ores
Support activities for other mining and quarrying
Support activities for petroleum and natural gas mining
Extraction of peat
Extraction of salt
Mining of chemical and fertilizer minerals
Operation of gravel and sand pits; mining of clays and kaolin
Other mining and quarrying not elsewhere classified