Boring and building of waterwells, driving of wells
Building of conveyance, distribution and water disposal networks
Scraping of rivers, pits, etc.
Terracing work: digging, grading of construction sites, opening of trenches, removal of rocks, destruction with explosives, etc.
Preparation of sites for mining: overburden removal and other work of planning and preparation for mining sites
Ground-water lowering and dredging of construction sites
Dredging of agricultural and silvicultural lands
Removal on construction sites
Test borings, test holes and corings for building and geophysical, geological and similar studies
Making of horizontal drillings for cables or pipes
Installation in buildings or in other projects of building of: pumbling systems and hygiene appliances, pipes for gas and water (except for heating), setting of automatic extinguishers, etc.
Implementation in buildings or in other projects of building of: thermal insulation materials, acoustic and antivibrating insulation materials
Work of insulation of pipes for heating or cooling
Work of insulation of coolers or refrigerated warehouses
Work of general installation
Setting of antennas and lightning rods
Cleaning of new buildings and restoring after works
Other works of finishing in buildings n.e.s.
Cleaning with steam, sandblasting and similar activities used on the outside of buildings
Making of repointing works
Setting of foundations, including pile hammering
Assembling of elements of metallic structures, not made by the unit making the works
Making of lifting works for third parties
Assembling and disassembling of scaffoldings and work platforms
Wholesale trade of other precious and semi-precious stones
Services related to prepress and pre-media
Reproduction of recorded media
Construction of high roads and other types of roads
Construction of distribution facilities for water and gas
Construction of sewerage systems
Construction of civil-technical works for liquids
Dredging
Preparing land for construction
Drilling and pre-drilling
Plumbing works
Insulation works
Intermediation of common goods
Retail trade in souvenirs and religious products in specialised shops
Other types of retail trade in new goods in specialised shops
Development and programming of computer programs
Activities with regard to computer consultancy
Trade in own real estate
Advice agencies in regard to public relations and communication
Other types of advice agencies related to business management
Other types of technical surveys and checks
Activities by graphical designers
Activities of photographers, with the exception of press photographers