TRMC

NAF Rev.2 (FR 2008) : Operation of gravel and sand pits; mining of clays and kaolin (0812Z)

Conventions Collectives : 2i - Convention collective nationale des industries de carrières et matériaux de construction (3249)

NACE Rev.2 (EU 2008) : Operation of gravel and sand pits; mining of clays and kaolin (0812)

ISIC 4 (ŚWIAT) : Quarrying of stone, sand and clay (0810)

NACE Rev.2.1 (EU 2025) : Operation of gravel and sand pits and mining of clay and kaolin (0812)