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Last Update: April 15, 2012

Need high quality geophysical ground imaging services for a reasonable price? Welcome to our official Website.
Since 2005 we have been providing ground imaging services to our customers both domestic and international.
And we continue to improve the ground imaging technology and experience inherited from former NSA Geotechnical Services, Inc.


Coming events:

June 24-27: 46th U.S. Rock mechanics/Geomechanics Symposium (ARMA 2012) in Chicago. C-TG will present "Ten Months of Ground Imaging Ahead of TBM Using Seismic Reflector Tracing".


Site specific ground problems?


Tunnel excavation
Shallow voids
Old workings
Solution mining
Foundations
Grouting

 

Phone: 303.932.2717
Fax:      303.932.2717
Call before faxing.

 
 
Number Of Visitors

Our expertise in ground imaging can help. Click at ground problem link to see examples for:
 


Imaging structural anomalies in front and/or around tunnels excavated in hard rock and in soft ground conditions;

Mapping near-surface voids, sink-holes, and structural anomalies in the ground for volumetric ground characterization;
Imaging/locating manmade voids associated with old mine workings;
Assessing extent of voids created by solution mining (successfully conducted to depth of 2,200 ft / 670 m);
Imaging foundations/piles under piers and abutments;
Assessing effectiveness of grouting (pre- and post-grouting conditions) for fractured or cavernous grounds.
 

New Equipment offered by our Company:      

  1. Swept Frequency Universal Seismic Source applicable at the ground/rock surface or in boreholes 2 to 3 inch in diameter, and up to 900 ft / 275 m deep;

  2. 16 channel borehole folding probe with accelerometers mechanically coupled to borehole walls, and operated in wet or dry boreholes 2 to 3 inch in diameter and up to 200 ft / 67 m long. The holes can be drilled from surface or in  any vertical direction from tunnels/underground openings 10 feet in diameter or larger.

 

Business Partner: Sawtooth Wireless Sensors, LLC