User's Manual

FIELD EQUIPMENT
NUSEIS
Geophysical Technology Inc Field Equipment Page | 51
• Identify the location for the NRU to be planted, as close to the pre-plot receiver point as
possible.
• Kick or scrape any loose dirt or gravel away from the point, this prevents any of that debris from
falling back into the hole after removing the deployment tool.
• Place the point of the tool firmly on the ground.
• Grip the slide hammer handles firmly with both hands. Slide the hammer up to a height that is
comfortable, then bring it down hard.
o Caution should be used when sliding the hammer up as the slide hammer can come out
of the bottom section of the MDT.
Figure 35
• Care needs to be taken to keep the tool straight up and down to create a hole for the NRU that
is as near to vertical as possible.
• Repeat the slide hammer blows until the tool reaches the desired depth.
• For the best NRU depth, the tool should be down, so the ground is level with the bottom of the
base collar, or just above it. In loose sandy soil, a deeper depth may be needed to compensate
for small cave-in material. Start of job experimentation may be needed to find an optimal depth
for the tool.