Ground Plane
The surface upon which the machine is placed.
The surface upon which the machine is placed.
This is a copper/brass rod which is hand driven into the ground and is connected to the drill rack and mats to provide adequate grounding of unit and personnel.
Cable connecting the mats and drill rig to the ground rod.
Upper surface of the zone of saturation in permeable rock or soil (when the upper surface is confined by impermeable rock, the water table is absent).
All subsurface water, as distinct from surface water.