Notified on 21 October 2008, this concentration operation consists of the merger by incorporation between the company Rubetão - Prefabricados de Betão SA (henceforth RUBETÃO), the incorporated company, and Secil Prebetão - Prefabricados de Betão SA (henceforth SECIL PREBETÃO), the incorporating company - an undertaking that is wholly owned by Secil Unicon SGPS Lda, which is jointly controlled, on the one hand, indirectly (through the SECIL Group), by the SEMAPA Group and CRH Group and, on the other hand, indirectly (through the Unicon A/S Group), by the CEMENTIR Holding SpA Group -, by means of the overall transfer of RUBETÃO´s assets to SECIL PREBETÃO and the assignment to the shareholders of the former of shares in the incorporating company.