Calssification of natural resources sector
- 3 - Mineral and mining sub-sector
- 31 - Mineral extraction
- 311 - Metallic minerals
- 312 - Non-metallic minerals
- 313 - Coal
- 32 - Mining services
- 33 - Primary mineral manufacturing
- 331 - Primary metallic minerals products
- 332 - Primary non-metallic minerals products
- Date modified: