User's Manual

FIELD EQUIPMENT
NUSEIS
Geophysical Technology Inc Field Equipment Page | 52
Figure 36
• To completely bury the NRU, drive down until the top of the bottom collar is level with the
ground.
• Once the desired depth is reached with the tool, it needs to be rotated slightly, back and forth 3
or 4 times to consolidate the hole sides. Do this by gripping the 2 handles on the main body of
the tool. Rotate while pressing down.
Figure 37
• To draw out the tool, holding the 2 handles of the main body of the tool, pull up slowly while
rotating the tool slightly. Care should be taken while drawing the tool up to not dislodge dirt
from the sides of the hole.
• Place the NRU in the hole.
o If too much material has fallen into the hole and prevents the NRU from reaching the
desired depth, redo the hole with the tool.
• Step on the top of the NRU to firmly plant it in the hole. The NRU should be solid in the ground
and have no room for any movement. An NRU with a good plant cannot be removed by hand