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A drilling rig mat is a portable platform used to support equipment used in construction and other resource-based activities, including drilling rigs, camps, tanks, and helipad. It may also be used as a structural roadway to provide passage over unstable ground, pipelines and more. 
It typically consists of wood, steel or rubber and is used both to protect the Earth and to allow workers to perform in a variety of conditions. For example, a rig mat used at an on-land oil rig might allow users to draw oil throughout wet or rainy seasons when the ground would otherwise be too unstable to support the necessary equipment and personnel.