Geostock is an international company specialising in consultancy, engineering, design, construction management, operation and maintenance services for Underground Storage facilities. Geostock’s services are available throughout the life of an underground storage facility, whatever the technique used or products stored. With its 50 years’ experience, Geostock boasts unique expertise and is a leading company which has grown continuously since it was first set up, and now employs 500 staff. Geostock is a subsidiary of Vinci Construction Grands Projets and is established in every continent, offering proximity services to its clients and partners. The company is able to provide a raft of skills as well as the resources necessary to guarantee a high degree of reactivity and top quality service. Underground storage is Geostock’s core activity. Staffs are multi-skilled and can deal with all the various techniques used in this sector: salt caverns, mined caverns and porous reservoir.