Geophysical Mapping

HGI’s subsurface geophysical mapping and characterization methods for mining applications include an assortment of geophysical and analytical tools that are enabling mine operators to more fully understand the hydraulic nature of engineered rock piles (dumps, heaps, stockpiles, tailings, etc.). Through the use of our geophysical and analytical tools, we have developed a strong understanding of the properties that dictate solution movement, including the roles of micro-structure due to the effects of agglomeration, grain size, and rock type, as well as macro-structure from lift design and stacking strategy. Geophysical methods can be used to highlight these complex structural features and potential problems that may arise. Seeps forming along the side slope, solution pooling near the surface, excessive head build up on liners, biological health, ineffective oxidation, and preferential flow within the heap are examples of the types of problems we have encountered.


HGI’s subsurface geophysical mapping and characterization methods for mining applications focus on the use of geophysical technologies and methods.  These tools can highlight complex structural features within the subsurface and potential problems that may arise.



HGI performs a variety of geophysical surveys and geophysical mapping for the mining industry


Our non-invasive geophysically-based characterization methods require no drilling. Our work is conducted strictly from the surface of the earth, making it an inexpensive means of understanding complex structural features over a broad area. Characterization methods using geophysics include electrical resistivity, induced polarization (IP), seismic methods, microgravity, electromagnetic induction, ground penetrating radar, and others. Our suite of tools includes modeling, data analysis, and a high-level understanding of hydrogeology, engineering, geology, and metallurgy to help put your site into a broader context of understanding.