Aero Surveys Inc. http://www.aerosurveys.com
Specialises in airborne geophysical surveys, using a variety of techniques and aircraft. Included are: magnetometer, gamma ray spectrometer, gravity meter, EM singly and/or in any combination.
Anglesey Geophysical Services http://www.anglesey-geophysical.com/
Provides acquisition quality controllers, data processors and seismic interpretation staff both locally and abroad. Features activities, past projects, a recent client listing and details about consultants.
DWS International, Inc. http://www.dwsii.com/
Worldwide marine geophysical 2D and 3D survey services, hydrographic surveys, system integration, side scan sonar, sea bottom classification, and seismic vessel outfitting and management.
Earth Dynamics http://www.earthdyn.com/
Terrestrial and marine engineering geophysical studies including: seismic refraction, electrical resistivity, ground penetrating radar, gravity, magnetics, side scan sonar and sub-bottom profiling.