4
Natural gas, fuel oil, liquefied natural gas
37
Installation, repair, emergency servicing and maintenance of gas appliances, oil and natural gas pipe work, and instruments utilizing gas; oil and natural gas pipe laying; repair, maintenance, replacement and refurbishment of pipelines; repair of roads and paths; construction, repair and maintenance of gas installations; services relating to the installation, repair and maintenance of energy-using appliances and instruments and to the construction, repair and maintenance of energy-using installation; installation of insulating materials, drilling of oil wells, mining in the nature of exploitation and extraction of oil and gas, oil and gas drilling, oil pumping and extraction; underwater construction of oil and gas drilling, pumping and extraction equipment and rigs; pipe line demolition; building construction services; construction, maintenance and renovation of property; obtaining hydrocarbons such as natural gas and crude petroleum from below ground such as from oil fields; installation, repair and maintenance of gas compressors; environmental remediation services, namely, waste disposal
39
Storage, public utility services in the nature of distribution, transportation, shipping and delivery of gas, liquefied natural gas, gaseous fuels and oil; public utility services in the nature of transmission and/or distribution and/or supply of electricity and other energy sources; leasing and rental of cars and commercial vehicles; underwater diving and salvage services; measuring of gas consumption
40
Generation of power; generation of electricity; oil and gas production
42
Measuring of gas consumption; safety checking of appliances and pipe work; scientific, engineering and environmental research and development services; geophysical and geological surveys services; exploration of gas and oil; underwater exploration; land development; surveying; computer services maintenance and updating of computer software design of computer software and programming; testing of gas appliances, pipe work, apparatus and instruments using gas; inspection of pipelines
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