Salini Impregilo SpA is engaged in the construction business and specializes in large and complex infrastructure projects worldwide. It operates through the following business segments: Construction, Concessions, Engineering and Plant Construction, and USW Campania Projects. The Construction segment encompasses all projects relating to the construction of large-scale infrastructure, such as dams, hydroelectric plants, motorways, railways, metros, underground works, bridges, and similar works. The Concessions segment deals with its investments in subsidiaries and other investees, almost entirely abroad, which hold concessions mainly for the management of motorway networks, plants that generate energy from renewable sources, electricity transmission, integrated cycle water systems, and the management of non-medical hospital service activities. The Engineering and Plant Construction segment includes the operation of plants for the desalination of sea water, fume treatment and waste-to-energy processes, as well as environmental services and urban solid waste disposal. The USW Campania projects segment covers the remaining USW disposal projects in the Province of Naples and other provinces in Campania. The company was founded in 1906 and is headquartered in Milan, Italy.