Notified on 10 January 2007, this merger consists of the acquisition by OPCA - OBRAS PÚBLICAS E CIMENTO ARMADO SA ("OPCA") of sole control of the company SOPOL - SOCIEDADE GERAL DE CONSTRUÇÕES E OBRAS PÚBLICAS SA ("SOPOL"), by means of the acquisition of representative shares of its registered capital, held by its present shareholders A. Silva & Silva SA and GEOSOC - Geotecnia e Fundações SA.