User's Manual

FIELD EQUIPMENT
NUSEIS
Geophysical Technology Inc Field Equipment Page | 55
Figure 42
➢ Never hammer or kick the top of the NRU to try to dislodge it from the ground. This may
damage the NRU or cause injury to the individual trying to remove the NRU.
• If an NRU has been planted below the level of the ground, a subsurface retrieval tool with long
tines will need to be used. See the next section for information on this tool.
• Never use the retrieval tool as a pickaxe or hammer.