Thus, untreated clays are generally considered unsuitable for ‘typical aggregate use’ (such as building foundation fill, concrete manufacture, road metal or mortar).
Crushed stone of a kind used for concrete aggregates, for road metalling or for railway or other ballast (excluding gravel, pebbles, shingle and flint)
Declaración relativa a la Carta de los Derechos Fundamentales dela Unión EuropeaEurLex-2 EurLex-2