This document informs users about the source materials that have been considered in the development of the aggregate standards: - EN 12620 'Aggregates for concrete'; - EN 13043 'Aggregates for bituminous mixtures and surface treatments for roads, airfields and other trafficked are-as'; - EN 13139 'Aggregates for mortar'; - EN 13242 'Aggregates for unbound and hydraulically bound materials for use in civil engineering work and road construction'; - EN 13383-1 'Armourstone – Part 1: Product standard'; - EN 13450 'Aggregates for railway ballast'; - EN 13055 'Lightweight aggregates'; Only source materials with a history of use in one or more member states are included in this document. It also specifies source material with a history of use for the scope of only one specific aggregate standard.