Heap Leach Injection
Geo-Logic Associates is the most experienced heap leach injection company in the world. We help our mining clients access previously unrecoverable gold, silver, and copper from existing tailings piles.
Most Worldwide Experience in Heap Leach Injection
Also known as enhanced metal recovery (EMR), Geo-Logic Associates’ heap leach injection process allows our mining clients to access hundreds of thousands of additional ounces of previously unrecoverable gold, silver, and copper, adding tens of millions of dollars to their bottom lines. With successful projects at 11 mines and 16 leach pads worldwide, we provide end-to-end EMR solutions that maximize recovery and return on investment. See how it works.
We are a full-service engineering company that designs and manages injection projects from concept to full production. Geo-Logic provides scoping and permitting services in every country in which we work, seepage and slope stability (finite element and FLAC) engineering to support the project, well design, drilling supervision and quality control, and implementation of injection services to recover metals. We provide comprehensive evaluation and monitoring services during injection, unmatched by competitors. We can monitor water levels in the leach pads in real-time and provide geophysical monitoring to verify the effectiveness of the solution to ore contact. GLA utilizes AI to evaluate project performance and assist with increasing project efficiencies, resulting in lower costs and higher recoveries.
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Heap leach injection
Also known as enhanced metal recovery (EMR), GLA’s heap leach injection process involves installation of steel-cased wells in heap leach pads with multiple perforated zones throughout the well profile. GLA uses proprietary tooling to isolate the respective zones and inject leach solution. The solution injection flushes out previously dissolved metals and creates new pathways to ore that had not been previously exposed to solution. Injection leaching thereby accelerates the recovery of target metals and recovers metals that were unrecoverable utilizing traditional surface application leaching. See how it works in this video.
Injection leaching results in a short-term return on investment, providing accelerated cash flow for costly operating expenses, mine reclamation, closure costs, and mine expansion projects that may be delayed due to high startup costs. Project revenue, as additional ounces recovered, is generated within days of the first injection of solution.
Key benefits are:
- Low cost to perform a pilot program
- Connects to existing heap leach solution piping
- Generates revenue within days of start of injections
- Recovers previously unrecoverable metals
- Accelerates metal production
- Customized plan to meet unique project needs
- Financing assistance available
- Enhances the bottom line
Drilling oversight
Proper well installation in accordance with the project specifications is critical to project success. GLA provides a complete range of project-specific, on-site construction observation and testing services to ensure that each injection leaching project is built to design specifications. We assist our mining clients during bidding and construction and ensure that projects are adequately staffed and supported throughout their design, bidding and contracting, construction, and regulatory approval phases.
Heap leach injection characterization, wells, and recovery
GLA designs injection plans and solution management tailored to meet the client- and site-specific needs. Wells can be reinjected to further enhance recovery. With enhanced metal recovery (EMR), GLA installs casing, lowers injection tooling into position, and injects solution into targeted zones of ore to recover additional recoverable materials. To enhance a mine’s bottom line with heap leach injection, GLA can assist with:
- Heap leach injection planning, design, and construction
- Heap leach wells planning, design, and construction
- Heap leach recovery planning, design, and construction
- Injection leaching planning, design, and construction
- Enhanced metal recovery planning, design, and construction
- Heap leach gravity wells planning, design, and construction
- Heap leach geophysics
- Heap characterization
- Alternative leaching technologies
Geotechnical evaluations
Working to ensure geotechnically safe injections, GLA performs geotechnical evaluations prior to and during heap leach injection to manage the potential effects of injections on pore water pressure and the stability of the heap leach pad. Testing and analysis may include:
- Seepage and pore pressure analyses
- Limit equilibrium and FLAC analyses
- Unsaturated and saturated soils testing and evaluation
- Soils strength testing
- Monitoring of active injections with instrumentation
Geophysics
GLA professionals monitor injection leaching projects utilizing geophysics including surface and subsurface electrical resistivity and nuclear magnetic resonance (NMR) testing
Heap leach injection
Also known as enhanced metal recovery (EMR), GLA’s heap leach injection process involves installation of steel-cased wells in heap leach pads with multiple perforated zones throughout the well profile. GLA uses proprietary tooling to isolate the respective zones and inject leach solution. The solution injection flushes out previously dissolved metals and creates new pathways to ore that had not been previously exposed to solution. Injection leaching thereby accelerates the recovery of target metals and recovers metals that were unrecoverable utilizing traditional surface application leaching. See how it works in this video.
Injection leaching results in a short-term return on investment, providing accelerated cash flow for costly operating expenses, mine reclamation, closure costs, and mine expansion projects that may be delayed due to high startup costs. Project revenue, as additional ounces recovered, is generated within days of the first injection of solution.
Key benefits are:
- Low cost to perform a pilot program
- Connects to existing heap leach solution piping
- Generates revenue within days of start of injections
- Recovers previously unrecoverable metals
- Accelerates metal production
- Customized plan to meet unique project needs
- Financing assistance available
- Enhances the bottom line
Drilling oversight
Proper well installation in accordance with the project specifications is critical to project success. GLA provides a complete range of project-specific, on-site construction observation and testing services to ensure that each injection leaching project is built to design specifications. We assist our mining clients during bidding and construction and ensure that projects are adequately staffed and supported throughout their design, bidding and contracting, construction, and regulatory approval phases.
Heap leach injection characterization, wells, and recovery
GLA designs injection plans and solution management tailored to meet the client- and site-specific needs. Wells can be reinjected to further enhance recovery. With enhanced metal recovery (EMR), GLA installs casing, lowers injection tooling into position, and injects solution into targeted zones of ore to recover additional recoverable materials. To enhance a mine’s bottom line with heap leach injection, GLA can assist with:
- Heap leach injection planning, design, and construction
- Heap leach wells planning, design, and construction
- Heap leach recovery planning, design, and construction
- Injection leaching planning, design, and construction
- Enhanced metal recovery planning, design, and construction
- Heap leach gravity wells planning, design, and construction
- Heap leach geophysics
- Heap characterization
- Alternative leaching technologies
Geotechnical evaluations
Working to ensure geotechnically safe injections, GLA performs geotechnical evaluations prior to and during heap leach injection to manage the potential effects of injections on pore water pressure and the stability of the heap leach pad. Testing and analysis may include:
- Seepage and pore pressure analyses
- Limit equilibrium and FLAC analyses
- Unsaturated and saturated soils testing and evaluation
- Soils strength testing
- Monitoring of active injections with instrumentation
Geophysics
GLA professionals monitor injection leaching projects utilizing geophysics including surface and subsurface electrical resistivity and nuclear magnetic resonance (NMR) testing
