HGI delivers expert services in the following markets:

Environmental - We characterize the subsurface to map contaminant plumes and hydrogeology. We locate leaks in lined ponds, heap leach pads, and landfills as well as buried tanks and pipes. In addition, we provide time lapse monitoring of fluid injections for corrective action of environmental contamination.

Engineering - We apply a variety of geophysical methods to obtain engineering properties of geological materials, assess geotechnical hazards, and provide non-invasive subsurface geological mapping. Our G.O. Cart™ survey tool is a proven, cost effective, rapid wide-area approach to site clearance mapping of buried infrastructure and objects. Our High Resolution Resistivity™ (HRR) technique is particularly well suited for characterization of earthen dams and levees to delineate seeps and piping.

Ground Water - We provide basin and fracture flow aquifer exploration and characterization and well casing assessment services. This includes the application of geophysical methods for characterization and monitoring of aquifer storage and recharge (ASR).

Mining - Our geophysical technologies are proven approaches to optimize the mineral extractive processes for enhanced heap leach and in situ recovery of metals and minerals. We also provide a broad suite of geophysical services for base and precious metal exploration.   

Oil & Gas - We have developed a unique electrical method for monitoring fluid behavior resulting from enhanced oil recovery (EOR) processes such as water floods and injections of surfactant and CO2. We also provide subsurface characterization of near-surface environmental contamination and mapping of buried infrastructure.  

Resource Exploration - Our experience in the exploration for economically extractable resources includes but is not limited to the following applications: resistivity and electromagnetics for detecting geothermal sources; induced polarization, magnetics, and gravity for identification of base and precious metals; and seismic refraction and reflection for locating ground water resources.