ANNEX XIII Indicative list of types of building materials considered with regard to their emitted gamma radiation as referred to in Article 75
1.Natural materials
(a)
Alum-shale.
(b)
Building materials or additives of natural igneous origin, such as:
granitoides (such as granites, syenite and orthogneiss),
porphyries;
tuff;
pozzolana (pozzolanic ash);
lava.
2.Materials incorporating residues from industries processing naturally-occurring radioactive material, such as:
fly ash;
phosphogypsum;
phosphorus slag;
tin slag;
copper slag;
red mud (residue from aluminium production);
residues from steel production