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Hydrogeologic Studies for the Resolution Mine
Our support for this project has included assessing potential impacts on nearby groundwater systems, estimating groundwater inflow during mine operations, developing a groundwater flow model, and conducting water level and hydrochemical monitoring.
Location: Pinal County, Arizona
M&A characterizes deep aquifer systems to evaluate the feasibility and potential impacts of proposed block-cave mining operations.
This deep ore body—one of the largest copper resources ever identified in North America—will be mined using the block-cave method. It is located in the vicinity of the underground workings of the Magma Mine near Superior, Arizona. Dewatering has already begun as part of prefeasibility study (PFS) activities.
Designed and supervised the drilling and construction of more than 30 characterization wells to depths of up to 7,000 feet
Conducted aquifer tests to determine hydraulic parameters for multiple zones within fractured-rock units
Analyzed available data to characterize hydrogeologic conditions
Integrated the hydrochemical, hydrologic, and geologic data collected during the exploration program to develop a conceptual model and characterize recharge / discharge relationships
Used the hydrochemical data to assess baseline conditions, groundwater flow pathways, and groundwater–surface water interactions
Designed and implemented a monitoring network to assess the groundwater system’s response to dewatering
Installed grouted annular instrumentation (fiber-optics and vibrating-wire piezometers) to depths of more than 6,000 feet to monitor rock stress and pore pressures in the ore zone and overlying aquitards / aquifers