Zonge International
3475 North Dodge Blvd , Tucson, Arizona, United States

The company was formed in 1972 by Kenneth L. Zonge who developed the complex resistivity (CR) investigation method, demonstrated its uses for natural-resource exploration, and became the first to build a microprocessor-based electromagnetic (EM) receiver in the early 1970s.  Today Zonge serves as a resource to exploration managers, engineers and independent consultants in three application areas— exploration, environmental and geotechnical. The company performs hundreds of projects each year involving seismic, magnetics, gravity and other geophysical methods, in addition to the EM methods it helped establish.  Formerly Zonge Engineering and Research Organization, the company changed its name to Zonge International in 2011.  Zonge International maintains offices in Tucson, Ariz. and Reno, Nev. and regularly establishes field offices for deployment worldwide.

Zonge International is a geophysical services and equipment resource for geoscientists and project managers in exploration, research, geotechnical and environmental engineering worldwide. Zonge is near the completion of a long-term reorganization. The early stages of the reorganization focused on our moving the headquarters of the Services group to Reno, NV. With that effort largely complete we are moving on to the Instrument group, with all Engineering and Manufacturing moving into the same facility at 3475 N Dodge Ave, Tucson AZ. With this move the last members of Zonge will be out of our long-term home on Fort Lowell Road and we are therefore in the process of selling that property and moving into our new home for the next 50 years.

We adapt methods and solutions to your project targets and objectives.

• Geophysical survey services, consulting and project management
• Ground and shallow-water geophysical field services
• Acquisition, processing, modeling and integrated interpretation of geophysical data—all or any part of the process required
• 2D, 3D, and time-lapse imaging
• Worldwide deployment capabilities
• Customized EM instruments, development, and training

Exploration Geophysical Services

• Faster, more strategic surveys
• 32-bit highest-quality MT data possible
• Wireless EM and wireless seismic arrays
• High-resolution, 3D data acquisition
• Acquisition, joint interpretation of EM, seismic, CSAMT, gravity, magnetics… more on methods >
• Rock properties laboratory testing
• Data and support for independent consultants to complete geophysics program management
• Ground and shallow-water geophysical field services
• Acquisition, processing, modeling and integrated interpretation of geophysical data—all or any part of the process Worldwide deployment

Capabilities

• In-house, multi-disciplinary expertise in geophysics, geology, and hydrology
• Acquisition and joint interpretation of EM, seismic, gravity, magnetics
• Complete ground capabilities for exploration including reflection seismic, CSAMT and MT more >
• 3D seismic, resistivity and IP for geotechnical and environmental applications
• Seismic surveys for exploration and geotechnical needs 
• Ground and shallow-water geophysical field services
• Airborne acquisition advisement and joint interpretation
• Extensive experience in acquisition and interpretation of 3D and 4D (time-lapse) data sets
• Integrated geophysics program management