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  2. Utility location - Wikipedia

    en.wikipedia.org/wiki/Utility_location

    Yellow spray paint indicating below-street gas utility line (New York City, 2007) Telecommunication cable location marking Colored flags for utility locating Permanent water pipeline markers in Switzerland. Utility color codes are used to identify existing underground utilities in construction areas, to protect them from damage during ...

  3. Cable locator - Wikipedia

    en.wikipedia.org/wiki/Cable_locator

    A cable locator or cable avoidance tool (CAT) is an instrument used for detecting the presence and approximate location of buried services in advance of undertaking excavation works. It aims to avoid accidents while excavating. [ 1 ]

  4. Ground-penetrating radar - Wikipedia

    en.wikipedia.org/wiki/Ground-penetrating_radar

    Borehole radars utilizing GPR are used to map the structures from a borehole in underground mining applications. Modern directional borehole radar systems are able to produce three-dimensional images from measurements in a single borehole. [8] One of the other main applications for ground-penetrating radars is for locating underground utilities.

  5. List of high-voltage underground and submarine cables

    en.wikipedia.org/wiki/List_of_high-voltage...

    London, Beddington Cable Tunnel,(Beddington – Rowdown) 400 kV 51.36594°N 0.12324°W ; 51.34789°N 0.00954°W London, Hertfordshire, Elstree to St. John's Wood Deep Cable Tunnel: 20 2005 400 kV 51.52666°N 0.16488°W ; 51.65512°N 0.32714°W London, West Ham – Hackney (Lower Lea Valley Cable Tunnel) 6.3 2008 400 kV

  6. Utility tunnel - Wikipedia

    en.wikipedia.org/wiki/Utility_tunnel

    A utility tunnel, utility corridor, or utilidor is a passage built underground or above ground to carry utility lines such as electricity, steam, water supply pipes, and sewer pipes. Communications utilities like fiber optics, cable television, and telephone cables are also sometimes carried.

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

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