37 Construction and construction management of tunnels and underground structures; Construction and installation of masonry walls and structures; Construction and renovation of buildings; Construction and repair of buildings; Construction consultancy; Construction consultation; Construction dewatering, namely, the removal of surface waters and groundwater to facilitate the construction of structures and pipelines; Construction grading services; Construction management; Construction of buildings; Construction of facilities, structures, living quarters, and utility buildings, production modules and subsea modules in the oil and gas industry; Construction of modular buildings; Construction of structures for the production of crude oil; Construction of structures for the production of natural gas; Construction of structures for the storage of crude oil; Construction of structures for the storage of natural gas; Construction of telecommunication towers; Construction planning; Construction project management services; Construction project management services in the field of construction of offshore oil and gas facilities; Construction project management services in the field of construction of renewable energy and energy generation equipment support structures and ancillary structures for supporting meteorological data gathering equipment; Construction project management services in the field of machining facilities; Construction services, namely, concrete paving, site clearing, excavation, pad preparation, grading, and asphalt paving services; Construction services, namely, installation of environmental containment systems; Construction services, namely, manhole adjusting; Construction supervision; Construction, maintenance and renovation of property; Gas pipeline maintenance services, namely, gas pipeline evacuation services; Gas turbine engine cleaning services; Gas turbine engine repair; Oil and gas drilling; Oil and gas industrial machine cleaning services; Oil and gas well downhole coring services; Pipeline construction; Pipeline construction and maintenance; Pipeline installation and repair; Pipeline maintenance; Cementing services for oil and gas wells; Cleaning services, namely, mechanically removing scale and sludge from tubes in steam generators in nuclear power plants; Consultation in building construction supervision; Consultation in the field of gas turbine and combustion engine restoration; Consultation in the field of gas turbine engine restoration; Consultation in the field of upgrades for gas turbine and combustion engine efficiency; Consulting in the field of building construction; Consulting services for the construction and installation of masonry walls and structures; Consulting services for the construction of water treatment and purification plants, solid waste treatment plants and other municipal infrastructure facilities; Consulting services in the field of construction of wind energy facilities; Consulting services in the field of offshore oil and gas facility construction; Covering, coating, and maintenance of pipelines for oil; Custom construction and building renovation; Extraction of oil and gas; Extraction of natural gas; Factory construction; General construction contracting; Hydro-electric factory construction; Inspection services in the course of construction of welding facilities; Inspection services in the course of construction of machining facilities; Installation and maintenance of solar energy based power plants; Installation of geothermal energy based power plants; Laying and construction of pipelines; Leasing of construction equipment; Maintenance, repair, replacement and tuning of components, parts or systems in steam and gas turbine generators; Oil pipeline construction; Oil pipeline laying; Plant construction, maintenance and construction project management services for businesses in the energy production and transmission sector; Rental of construction and building equipment; Rental of construction equipment; Rental of construction machines and apparatus; Rental of gas or air compressors; Repair of construction testing equipment; Repair or maintenance of construction machines and apparatus; Repair or maintenance of nuclear power plants; Residential and building construction consulting; Residential and commercial building construction; Scaffolding, earthworks or concrete construction; Self-perform construction skilled trades, namely, concrete work, carpentry and selective demolition services; Technical consultation in the field of building construction; Technical consulting related to the installation of oil and gas equipment, control systems, and machinery; Water washing of gas turbine engines
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