Extraction of natural resources; building, construction and demolition; building maintenance and repair; installation, maintenance and repair of plumbing; lift and elevator installation, maintenance and repair; hvac (heating, ventilation and air conditioning) installation, maintenance and repair; road sealing and stripping; interior sealing and caulking services; waterproofing of basements; road stripping; installation of bridge expansion joints; application of slip-resistant safety floor sealers; application of waterproof coatings; pavement striping; plant refurbishment; painting of metal surfaces to prevent corrosion; coating of drains; coating of sewers; coating of brickwork; asbestos extraction; coating [painting] services; application of coatings to tunnels; application of coatings for the repair of walls; application of screeds; application of rendering to tunnels; application of waterproof coatings for roofs; application of surface coatings; application of protective paint to wood; application of anti-graffiti coatings; application of coatings to swimming pools; application of protective coatings to cavity surfaces; application of rendering to swimming pools; excavating services for verifying the location of utility lines; advisory services relating to the installation of power plants; advisory services relating to the repair of civil engineering structures; advisory services relating to the repair of plumbing; advice relating to preventing blockages in septic tanks; advice relating to preventing blockages in plumbing lines; advisory services relating to the maintenance of plumbing; advisory services relating to the reinstatement of trenches; advisory services relating to surfacing projects; advisory services relating to pipe laying; advisory services relating to the installation of fixings; advisory services relating to the installation of plumbing; information services relating to installation of security systems; repair information; construction of wave energy power plants; apartment refurbishment services; advisory services relating to the repair of environmental control systems; advisory services relating to the maintenance of environmental control systems; advisory services relating to the installation of lighting apparatus; advisory services relating to the installation of fire prevention equipment; advisory services relating to the installation of building automation equipment; advisory services relating to the installation of hydraulic equipment; advisory services relating to the installation of passenger lifts; advisory services relating to the maintenance of fixings; advisory services relating to the renovation of property; advisory services relating to the maintenance of buildings; providing information relating to the repair or maintenance of storage tanks; providing information relating to the rental of construction machines and apparatus; providing information relating to the repair or maintenance of gasoline station equipment; providing information relating to the repair or maintenance of chemical plants; providing information relating to the repair or maintenance of bicycle parking apparatus; providing information relating to the repair or maintenance of water pollution control equipment; providing information relating to the repair or maintenance of construction machines and apparatus; providing information relating to the repair or maintenance of mechanical parking systems; providing information relating to the repair or maintenance of waste crushing machines and apparatus; coating of concrete; coating of conduits; coating services for the repair of industrial engineering plant; coating services for the repair of engineering plant; coating services for the maintenance of industrial engineering plant; coating services for the maintenance of marine engineering plant; concrete repairs; concrete renovation; drilling; roofing installation; resurfacing of roofs; ceiling installation; decorating of buildings; asbestos removal; soil covering; soil stabilization means; pavement marking services; pressure grouting services; insulating of pipes; installation of sewer liners; installation of lighting systems; fitting of floor coverings; installation of ground anchors; installation of grills; services for the installation of cavity wall ties; installation of interior partitions for buildings; installation of cavity wall insulation; installation of sun roofs; installing drywall panels; installation of doors; installation of false floors; installation of mezzanine floors; installation of internal partitioning; installation of electrical wiring; electrical installation services; installation of roof timbering; renovation, repair and maintenance of electrical wiring; renovation of electrical wiring; erection of reinforced concrete structures utilising sliding and climbing formworks; erection of grandstands; fence erection services; erection of sliding formworks; erection of curtain walling; information services relating to maintenance of security systems; information services relating to the refurbishment of buildings; damp proofing services; marine construction services; interior refurbishment of buildings; interior renovation of commercial premises; pipeline construction and maintenance; irrigation devices installation and repair; installation, repair and maintenance of boiler tubes; installation, repair and maintenance of cleanroom facilities and equipment; installation and maintenance of irrigation systems; installation and maintenance of photovoltaic installations; installation and maintenance of solar thermal installations; installation services for building scaffolds, working and building platforms; installation services of building scaffolds; installation of building scaffolds, working and building platforms; installation of lighting apparatus; installation of lightning conductors; application of fire retardant coatings; ceiling lining installation; installation of fixtures and fittings for domestic premises; installing fencing; installing septic tanks; installation of electric light and power systems; installation of coloured panels in building fascia; installation of plant; installation of building automation equipment; installation of hydraulic equipment; installation of industrial plant; installation of insulating materials; installing septic fields; installation of storage facilities; installation of industrial machinery; installation of photovoltaic cells and modules; installation of shelving; installation of rainwater drainage systems; installation of rainwater collection systems; installation of rainwater harvesting systems; installation of rainwater tanks; installation of pipe insulation; installation of street information placards; installation of street furniture; installation of drying apparatus; installation of environmental protection systems; installation of traffic management systems; installation of pneumatic bulk material handling systems; installation of tubular linings in passageways; installation of environmental engineering systems; installation of transmission lines; installing wallboard; installation of plumbing systems; installation of water supply apparatus; installation of fabricated construction units; installation of basement waterproofing products; installation services for building scaffolds, working and building platforms; servicing of cranes; servicing of conduits; swimming-pool maintenance; maintenance of roads; insulation services; laying of cable; plumbing and glazing services; plumbing and installation of gas and water supply systems; anti-corrosion treatment; varnishing of board materials; installation and maintenance of land irrigation systems; painting, interior and exterior; painting and varnishing; mechanical cleaning of waterways; installing siding; installation of fittings for buildings; installation of felt roofs; installation of racks; installation of doors and windows; erection of pre-fabricated buildings; assembling [installation] of storage systems; assembling [installation] of shelving; assembling [installation] of building framework; repointing of brickwork; installation of parquet flooring; concrete polishing; pumping septic tanks; cleaning of drains; cleaning of water supply plumbing; cleaning of building sites; dismantling of scaffolding; cleaning of site roads; cleaning of property; septic tank cleaning; cleaning of stone work; cleaning of urban areas; cleaning of public areas; renovation of property; renovation of kitchens; welding for repair purposes; repair or maintenance of building equipment; repair or maintenance of bicycle parking apparatus; repair or maintenance of chemical plants; repair or maintenance of machines and apparatus for woodworking; maintenance and repair of storage tanks; repair or maintenance of mining machines and apparatus; repair or maintenance of nuclear power plants; repair or maintenance of machines and apparatus for lumbering; repair or maintenance of waste crushing machines and apparatus; repair or maintenance of machines and apparatus for veneer making; repair or maintenance of machines and apparatus for plywood making; repair or maintenance of construction machines and apparatus; repair or maintenance of cultivating machines and implements; repair and maintenance of building scaffolds, working and building platforms; maintenance and repair of earth moving equipment; maintenance and repair of earth moving machines; maintenance and repair of energy generating installations; maintenance and repair of gas and electricity installations; maintenance and repair of refrigerating apparatus; maintenance and repair of cooling appliances and installations; maintenance and repair of road making equipment; maintenance and repair of road making machines; maintenance and repair of wave energy power plants; maintenance and repair of wind power plants; maintenance and repair of mining equipment; repair or maintenance of water pollution control equipment; repair or maintenance of mechanical parking systems; repair of construction machines and equipment; repair of biogas plants and machines; repair of fire damage; repair of pressurised containers; repair of energy production plants and machines; repair of energy supply installations; repair of power lines; repair of gas supply systems; repair of water pollution control equipment; scaffolding repair; repair of hollowware; repair of canalization systems; services for the repair of canals; repair of air filters; repair of air filters and parts thereof; repair of machines for treating organic waste; services for the repair of conduits; repair of sanitary installations; repair of drying apparatus; repair of water supply apparatus; repair of water supply installations; services for the repair of heat exchangers; repair of fences; repairing construction works; rust removing; rustproofing; renovating services relating to discharge conduits; restoration of architectural works; restoration of baths; restoration of retail premises; renovation of industrial boilers; renovating services relating to conduits for water supply; renovation of nuclear plant; repair services for floor coverings; repair services for stair coverings; repair services for wall coverings; floor sanding; drill bit sharpening; spray painting of metals; spray painting; abrasive cleaning of metallic surfaces; underwater abrasive cleaning of metallic surfaces; abrasive cleaning of non-metallic surfaces; underwater abrasive cleaning of non-metallic surfaces; street sweeping services; marking of roads; street cleaning; ceiling texturing; texturing (ceiling or wall -); wall texturing; paper hanging; joinery [repair]; drywall installation services; renovation of commercial premises; maintenance of property; underwater dredging; underwater repair; floor layering; installation of gas and water pipelines; installing wood flooring; laying of land cables; mains laying; laying floor tile; tile laying, bricklaying or block laying; laying of sea cables; carpet laying; installation of water pipes; servicing of nuclear plant; maintenance and repair of flooring; maintaining and repair of roof guttering; maintaining and repair of rain channels; repair or maintenance of water purifying apparatus; maintenance and repair of systems incorporating hoses which convey fluid; maintenance, repair and reconditioning of photovoltaic apparatus and installations; maintenance of water pollution control equipment; maintaining septic systems; provision of maintenance services for sports centers; maintenance of water purifying apparatus; civil engineering maintenance involving the use of pressurised jets of abrasive-containing water; civil engineering maintenance involving the use of hydromechanical cutting equipment; civil engineering maintenance involving the use of water-jet cutting equipment; carpentry services; providing information relating to septic tank cleaning services