| AGENTS INVOLVED IN THE SALE OF FUELS, ORES, METALS AND INDUSTRIAL CHEMICALS |
| DISTRIBUTION OF ELECTRICITY |
| DISTRIBUTION OF GASEOUS FULES THROUGH MAINS |
| EXPLOITATION OF OTHER NON-METAL ORES AND MINERALS |
| EXTRACTION OF CRUDE PETROLEUM |
| EXTRACTION OF NATURAL GAS |
| EXTRACTION OF PEAT |
| EXTRACTION OF SALT |
| MANUFACTURE OF COKE OVEN PRODUCTS |
| MANUFACTURE OF GAS |
| MANUFACTURE OF REFINED PETROLEUM PRODUCTS |
| MINING OF GRAVEL, SAND PITS, CLAYS AND KAOLIN |
| MINING OF HARD COAL AND ANTHRACITE |
| MINING OF IRON ORES |
| MINING OF LIGNITE AND BROWN COAL |
| MINING OF MINERALS, PRODUCTION OF FERTILISER MINERALS AND CHEMICALS |
| MINING OF ORNAMENTAL AND BUILDING STONE, LIMESTONE, GYPSUM, CHALK AND SLATE |
| MINING OF OTHER BLACK, NON-FERROUS AND PRECIOUS METAL ORES |
| MINING OF URANIUM AND THORIUM ORES |
| PROCESSING OF NUCLEAR FUEL |
| PRODUCTION OF ELECTRICITY |
| RETAIL SALE OF AUTOMOTIVE FUELS IN SPECIALISED STORES |
| SEWERAGE SYSTEM AND TREATMENT OF WASTEWATERS |
| STEAM AND AIR CONDITIONING SUPPLY |
| SUPPORT ACTIVITIES REGUARDING PETROLEUM AND NATURAL GAS RESEARCH AND EXPLOITATION |
| SUPPORT ACTIVITIES REGUARDING THE RESEARCH AND EXPLOITATION OF OTHER ORES |
| TRADE OF ELECTRICITY |
| TRADE OF GAS THROUGH MAINS |
| TRANSMISSION OF ELECTRICITY |
| WATER COLLECTION, TREATMENT AND SUPPLY |
| WHOLESALE OF SOLID, LIQUID AND GASEOUS FUELS AND RELATED PRODUCTS |
