37 Building construction services; construction of public works; construction, installation and renovation services, namely, pile driving services; ground improvement services, namely, stabilization, underpinning and strengthening of soil, earth and ground by treatment of soils beneath structures, soil improvement using depth vibrators, improvement of load bearing and settlement characteristics of fill material and soils, compacting weak soils to improve bearing capacity and to reduce settlement, slope stability, provision of barriers to downward percolation of surface water, and provision of cut off walls to prevent ingress of contaminated groundwater or to divert flows through treatment gates; ground reinforcement services, namely, construction of retaining walls, slope stabilization, piling, compaction grouting, permeation grouting and jet grouting, earth retention, grout reinforcement, construction of timber and concrete crib walls, installation of gabion baskets and reinforced soil slopes and structures, and maintenance and repair of foundations; grout reinforcement; maintenance and repair of foundations; stabilization, underpinning and strengthening of soil, earth and ground by cement and grout injection, by compaction and by insertion of reinforcing materials and piling; construction of buildings, public works, permanent and civil engineering structures, excavation of trenches or walls in the earth, injection of preparations into soil for their fortification or their waterproofing as well as for the laying of reinforcements or ties to fortify the earth; sealing of porous ground strata; Construction and construction management of tunnels; ground drilling services, namely, drilling for transportation systems, bridges, roadways, railroads, water, sewage and drains, electricity, gas, telecommunications, baggage handling tunnels, deep water drilling, ground stabilization and settlement control; construction of tunnels and ground drilling for transportation systems, bridges, roadways, railroads, water, sewage and drains, electricity, gas, telecommunications, baggage handling tunnels, deep water drilling, ground stabilization and settlement control; repair, restoration, maintenance and underpinning of buildings, walls, bridges, tunnels, mines, airport runways, embankments, dams, docks, quays, jetties, piers, groynes and of moles; prevention, diminution and correction of building subsidence and settlement; construction and repair of houses, buildings, transportation systems, bridges, roadways, railroads, and dams, levies, seawalls, and tunnels; prevention, diminution and correction of building subsidence and settlement; installation of piling and retention systems; installation of pre-formed piles or piles cast in situ; digging trenches for transportation systems, bridges, roadways, railroads, water, sewage and drains, electricity, gas, telecommunications, baggage handling tunnels, deep water drilling, ground stabilization and settlement control; constructing foundations for, and the maintenance of, wharves, jetties and other marine structures; ground vibro-compaction services for ground stabilization; installation of vibro concrete columns; ground compaction services, namely, compacting granular soils and rearranging the soil particles into a denser state to allow a proposed structure to be safely and reliably founded, deep soil mixing, installation of displacement columns and vertical drains; soil mixing services, namely, mechanically mixing soil with a binder to improve ground stabilization; ground stabilisation services, namely, providing vibro compaction, vibro replacement, vibro concrete columns, deep soil mixing, displacement columns, compaction grouting, dynamic compaction, vertical drains, cavity grouting, piled foundations, grouting, shoring, underpinning excavation supports, and slope protection, all for the purpose of stabilizing the ground under structures; foundation underpinning services; installation of rock and soil anchors, nails and minipiles; provision of specialty grouting services, compaction grouting, jet grouting and fracture grouting in the ground in new construction projects, repair and maintenance work, excavation support, and settlement control; building supervision for construction projects; building construction monitoring, namely, building construction supervision; underwater construction; installation of pipeline anchor systems and accessories; blasting operations, namely, rock blasting and soil blasting services; building repair, maintenance, and demolition services; building demolition; building construction, maintenance and repair services for roads, tracks, runways, bridges, bridge abutments, stabilized land structures, earth stabilization structures by means of mechanical effect, earth stabilization devices, earthworks, retaining walls, dikes, tunnels, gutters, chambers, retention basins, reservoirs, silos and historical monuments, waste processing facilities; earthmoving services; land clearing; dredging; repair and maintenance of aboveground storage tanks; earth pollution removal work, namely, land reclamation services; installation of utility and drainage systems; supervising in the field of construction; rental of construction equipment; general construction contracting and construction project management services; construction facilities management services, namely, maintenance and repair of buildings; engineering construction, namely, construction of metal building structures; electric appliance installation and repair; construction of public works; repair, installation and maintenance of computers and computer network systems; repair, maintenance and installation of telecommunications systems; maintenance of plant and rough terrain mechanical handling equipment; installation of communications and data networks and systems, fire and safety systems, and security systems; leasing and renting of construction equipment; consultancy, advisory and information services relating to all the aforesaid services