History
The exploitation, since 1950, of a quarry located in Urnieta (Gipuzkoa) will be the origin of the foundation of Aizkibel S.A. in 1982, in which Calcinor will participate, carrying out its complete management since 2005. The aim of the company was to exploit quarries to obtain construction materials and manufacture concrete and mortar, a task that Aizkibel S.A. continues to carry out today from its facilities in Urnieta, Albiztur and Altzo.