Hispano Sueca de Ingeniería S.A. (HISISA) was incorporated in 1965 with the purpose of executing special works of high quality and precision in the area of underground construction.
From its beginnings up to the present it has carried out complex and delicate projects such as demolitions of buildings, bridges, concrete plugs in dams, blasting in mining cuts, industrial excavations and quarries, as well as individual excavations requiring the use of contouring and presplitting techniques and control of spraying and vibrations.
As examples of individual excavations, HISISA has executed underwater blasting and large caverns for hydroelectric power plants. The scope of HISISA’s work includes Engineering projects such as designs, technical and economic analyses, forecast and control programmes, supervision and establishment of working methods, as well as viability studies for all kinds of underground projects.
To supplement the work it has been carrying out for over 47 years, HISISA continues to provide solutions that contribute added value to underground projects, now in the field of waterproofing tunnels, galleries, shafts, caverns, etc., analysing the technique best suited to the specific requirements of each case and subsequently carrying out the work with its own resources so as to guarantee the appropriate quality necessary to achieve long-lasting underground infrastructure.