Construction of buildings, namely, airports, office or residence towers, subway or railway stations, parking structures, hotels, and museums; construction of public infrastructural structures, namely, roads, expressways, tunnels, subway or railway lines, ports, docks, dikes, canals, piers and bridges; construction of structures involved in energy generation, namely, hydroelectric power stations, thermal power stations, and nuclear power stations; excavation services, namely, excavation of tre...