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2. Utility location - Wikipedia

   en.wikipedia.org/wiki/Utility_location

   Utility locator tool in use (Perry, Oklahoma, 2011) Utility location is the process of identifying and labeling public utility mains that are underground. These mains may include lines for telecommunication, electricity distribution, natural gas, cable television, fiber optics, traffic lights, street lights, storm drains, water mains, and wastewater pipes.

3. Cable locator - Wikipedia

   en.wikipedia.org/wiki/Cable_locator

   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] A number of types of detecting technology can be employed by such instruments, including use of ...

4. Directional boring - Wikipedia

   en.wikipedia.org/wiki/Directional_boring

   Directional boring. Directional boring, also referred to as horizontal directional drilling ( HDD ), is a minimal impact trenchless method of installing underground utilities such as pipe, conduit, or cables in a relatively shallow arc or radius along a prescribed underground path using a surface-launched drilling rig.

5. Subsurface utility engineering - Wikipedia

   en.wikipedia.org/wiki/Subsurface_utility_engineering

   Subsurface utility engineering (SUE) refers to a branch of engineering that involves managing certain risks associated with utility mapping at appropriate quality levels, utility coordination, utility relocation design and coordination, utility condition assessment, communication of utility data to concerned parties, utility relocation cost estimates, implementation of utility accommodation ...

6. Underground pneumatic boring - Wikipedia

   en.wikipedia.org/wiki/Underground_pneumatic_boring

   The purpose of the drill is to create a tunnel under surface obstructions. First, the operator surveys the area and the obstacle (road, sidewalk, driveway). Utility locators must supervise any underground work, and the path most clear of utilities is chosen to send the tool through. The first hole is dug on one side of the obstacle.

7. Ground-penetrating radar - Wikipedia

   en.wikipedia.org/wiki/Ground-penetrating_radar

   Ground-penetrating radar ( GPR) is a geophysical method that uses radar pulses to image the subsurface. It is a non-intrusive method of surveying the sub-surface to investigate underground utilities such as concrete, asphalt, metals, pipes, cables or masonry. [ 1] This nondestructive method uses electromagnetic radiation in the microwave band ...

8. Map: Illinois Underground Railroad historical sites, plus ...

   www.aol.com/sports/map-illinois-underground...

   If you were paying attention in history class, you’ll recall the Underground Railroad wasn’t a railroad at all. Rather, it was a fluid network of locations where freedom seekers sought refuge ...

9. National Utility Contractors Association - Wikipedia

   en.wikipedia.org/wiki/National_Utility...

   Website. NUCA.com. The National Utility Contractors Association ( NUCA) is a trade association representing the underground utility industry in the United States. Founded in 1964, NUCA is the largest trade association for this industry in the country. [1] It represents contractors, suppliers, and manufacturers involved in water, sewer, gas ...