71.20.B - Other technical testing and analysis
42.11.Z - Works related to construction of roads and motorways
74.90.Z - Other professional, scientific and technical activities not elsewhere classified
72.19.Z - Other research and experimental development on natural sciences and engineering
71.12.Z - Engineering activities and related technical consultancy
43.99.Z - Other specialised construction activities not elsewhere classified
43.29.Z - Other construction installation
43.13.Z - Test drilling and boring
43.12.Z - Site preparation
42.99.Z - Works related to construction of other civil engineering projects not elsewhere classified
42.91.Z - Works related to construction of water projects
42.21.Z - Works related to construction of transmission pipelines and distribution networks
42.13.Z - Works related to construction of bridges and tunnels
42.12.Z - Works related to construction of railways and underground railways
08.11.Z - Quarrying of ornamental and building stone, limestone, gypsum, chalk and slate
41.20.Z - Building works related to erection of residential and non-residential buildings
41.10.Z - Realization of building projects related to erection of buildings
23.99.Z - Manufacture of abrasive products and others non-metallic mineral products not elsewhere classified
23.70.Z - Cutting, shaping and finishing of stone
23.69.Z - Manufacture of other articles of concrete, plaster and cement
23.63.Z - Manufacture of ready-mixed concrete
23.62.Z - Manufacture of plaster products for construction purposes
23.61.Z - Manufacture of concrete products for construction purposes
09.90.Z - Support activities for other mining and quarrying
08.99.Z - Other mining and quarrying not elsewhere classified
08.92.Z - Extraction of peat
08.12.Z - Operation of gravel and sand pits; mining of clays and kaolin
