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Geophysical
Method Test Grid
Though
the School of Mines presents both theory and methods of
Geophysics, we historically have had no suitable place to
teach most of our methods in a controlled area. To provide
an area to test, calibrate, and teach with equipment, Andy
Kass, Brett Lyons, and Armando Sosa have designed and
built a test grid to encompass UXO, archaeological, utility
line, and other anomalies.
The
100 by 50 meter grid has been placed in a field in Arvada,
CO. The area is relatively free of electromagnetic noise
with the exception of the ever-present 60 Hz interference.
Fences, roads, traffic, and utilities are also at a minimum.
The
tables below are a partial list of the methods to be employed
and the targets to be buried.
| Objects
To Be Buried |
Methods/Instruments
To Be Employed |
| Inert
UXO analogues (With varying orientation and magnetization)
and scrap metal |
EM-31*,
EM-63*, Magnetic Gradiometry |
| Utility
analogues (metallic and PVC pipe, dipping pipes, cable) |
EM-31*,
Magnetic Gradiometry |
| Magnetized
non-metallic objects |
Magnetic
Gradiometry |
| Concrete
block |
Near
Surface Seismic, GPR, DC/IP Profilings |
| Fencing
materials |
Ground
Penetrating Radar, Magnetics, EM |
| Foundation
materials |
Near
surface Seismic, GPR, others |
| Trench
for disturbed soil |
Ground
Penetrating Radar |
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*Instrumentation
by Geonics |
At
present, the UXO grid is complete, with the other portions
of the grid slated for completion by summer 2006. The deactivated
rounds, which were generously donated by the Montana Army
National Guard, span a wide range of artillery geometries.
We
feel extremely fortunate to have access to this site. We
would like to recognize and thank Mark Floyd and the City
of Arvada for their help, patience, and enthusiasm. Without
their committment to the research we do and the Colorado
School of Mines as a whole, this project would never have
started.
This
site will be updated with sample data and more pictures
once processing is complete.
If
you have any questions or concerns about this project, please
contact Andy Kass at
mkass@mines.edu.
  
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