The projects of Civil Works carry a great responsibility given their complexity and social character. At OSSA we put our best resources at the service of the new challenges. For this reason, OSSA is the ideal partner, with proven technical capacity resulting from long experience.

OSSA has participated in the construction of more than seven underground hydroelectric plants, some of which have been for many years the most important in Europe (Hydroelectric Power Station of Cortes-La Muela in Valencia and San Esteban in Orense).

OSSA is a leader in coal mining, metal mining, ornamental stone mining projects and mining infrastructure works: Vertical shafts, access galleries and large chambers, underground workshops, crushing plants and pumping rooms.

Thanks to our long history in the construction sector, OSSA has qualified personnel to manage lighting, electrical systems, safety systems, ventilation and other installations, as well as waterproofing. OSSA also provides technical assistance to the works.