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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. Cellular confinement - Wikipedia

   en.wikipedia.org/wiki/Cellular_confinement

   [5] [6] The US Army Corps of Engineers in Vicksburg, Mississippi (1981) experimented with a number of confining systems, from plastic pipe mats, to slotted aluminum sheets to prefabricated polymeric systems called sand grids and then, cellular confinement systems. Today cellular confinement systems are typically made from strips 50–200 mm ...

4. Travois - Wikipedia

   en.wikipedia.org/wiki/Travois

   Although considered more primitive than wheel-based forms of transport, on the type of territory where the travois was used (forest floors, soft soil, snow, etc.), rather than roadways, wheels would have encountered difficulties which would have made them less efficient.

5. Marston Mat - Wikipedia

   en.wikipedia.org/wiki/Marston_mat

   Marston Mat, more properly called pierced (or perforated) steel planking (PSP), is standardized, perforated steel matting material developed by the United States at the Waterways Experiment Station shortly before World War II, primarily for the rapid construction of temporary runways and landing strips (also misspelled as Marsden matting).

6. AOL Mail

   mail.aol.com

   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!

7. Playground surfacing - Wikipedia

   en.wikipedia.org/wiki/Playground_surfacing

   The International Play Equipment Manufactures Association is a member-driven resource for information on safe playground equipment and surfacing. National Recreation and Parks Association - Certified Playground Safety Inspector Certification generates public support for advancing the development of best practices and resources that will make ...