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2. Access mat - Wikipedia

   en.wikipedia.org/wiki/Access_mat

   An access mat is a portable platform used to support equipment used in construction and other resource-based activities, including drilling rigs, camps, tanks, and helipads. It may also be used as a structural roadway to provide passage over unstable ground, pipelines and more.

3. Earthing system - Wikipedia

   en.wikipedia.org/wiki/Earthing_system

   Since the earth leakage is restricted, leakage protection devices can be set to less than 750 mA. By comparison, in a solidly earthed system, earth fault current can be as much as the available short-circuit current. The neutral earthing resistor is monitored to detect an interrupted ground connection and to shut off power if a fault is detected.

4. Antistatic device - Wikipedia

   en.wikipedia.org/wiki/Antistatic_device

   An antistatic floor mat or ground mat is one of a number of antistatic devices designed to help eliminate static electricity. It does this by having a controlled low resistance: a metal mat would keep parts grounded but would short out exposed parts; an insulating mat would provide no ground reference and so would not provide grounding.

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   Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.

6. Earth potential rise - Wikipedia

   en.wikipedia.org/wiki/Earth_potential_rise

   Such a zone can be produced through the use of a metal mat connected to the grounded object. Usually this metal mat (or ground mesh) is connected to buried ground rods to increase contact with the earth and effectively reduce grid impedance. [2] In some cases, a grounding grid can be used to equalize the voltage within the grid.

7. Cellular confinement - Wikipedia

   en.wikipedia.org/wiki/Cellular_confinement

   Early research (Bathurst and Jarrett, 1988) [13] found that cellular confinement reinforced gravel bases are "equivalent to about twice the thickness of unreinforced gravel bases" and that geocells performed better than single sheet reinforcement schemes (geotextiles and geogrids) and were more effective in reducing lateral spreading of infill under loading than conventional reinforced bases.