Open cast coal working

• Deep coal mines
• Extraction of crude petroleum
• Extraction of natural gas
• Extraction of peat
• Mining and quarrying n.e.c.
• Mining of chemical and fertilizer minerals
• Mining of iron ores
• Mining of other non-ferrous metal ores
• Mining of uranium and thorium ores
• Operation of gravel and sand pits; mining of clays and kaolin
• Quarrying of ornamental and building stone, limestone, gypsum, chalk and slate
• Support activities for other mining and quarrying
• Support activities for petroleum and natural gas extraction