Resolution Copper completes $75 million restoration of historic mining land

Courtesy photo The 15-year project cleaned up 475 acres of land impacted by historical mining activities of Magma Copper Company.

Resolution Copper has completed a $75 million restoration and reclamation project of 475 acres of land affected by close to a century of historic impacts from the Magma Copper Mine near the Town of Superior.

Resolution Copper voluntarily committed to accelerate the reclamation work to demonstrate its commitment to cleaning up the historic mining impacts well in advance of any new mine development activities.

Resolution Copper Project Director Andrew Lye said, “We’re proud to deliver this significant piece of environmental remediation work decades earlier than required, to make our community a cleaner and safer place to live and work. Cleaning up the historic Magma Copper Mine ahead of time demonstrates our commitment to operating safely and responsibly, in a way that brings lasting benefits to the entire community. This work was completed by local contractors and ongoing post-closure monitoring and maintenance activities will continue to provide local jobs as an important part of our business.”

In total, the reclamation project has supported more than two dozen local jobs with businesses such as Oddonetto Construction, based in Globe, Arizona.

Oddonetto Construction owner Mike Oddonetto said, “Resolution Copper has been an important source of business for my firm for more than a decade, and I look forward to continuing to work with the company to grow our business.

The Magma Copper Company ran mining and processing operations between 1910 and 1996, including smelting operations on the site from 1924 until 1971. Since 2005, reclamation work by Resolution Copper has included more than a decade of soil clean-up, placing a cover with soil and vegetation over the historic tailings, restoring and establishing drainage for passage of stormwater, reshaping and vegetating development rock piles, removing the old concentrator complex and smelter structures. Reclamation and restoration have included shaping landforms to a more natural state and vegetating with a native seed mix characteristic of the surrounding Sonoran Desert landscape.

Recently, the completed restoration and reclamation was approved by the Arizona Department of Environmental Quality (ADEQ). As required, Resolution will continue post-closure monitoring for the next three decades, including groundwater monitoring, surface water monitoring, regular inspection of all facilities and monitoring of the vegetative cover.

Resolution Copper also recently completed a $200 million project to deepen the Magma Copper Mine Shaft #9, that was originally constructed in 1971. Over the last four years, the shaft has been sunk a further 2,000 feet to over 6,800 feet below the surface. It now connects to the newer Shaft #10 in two places, improves ventilation, and increases safety by providing a second exit for workers.

Resolution will now focus on the maintenance of Shafts #9 and #10 and continuing the underground characterization study to increase ore-body knowledge, as the project continues to progress through a multi-year federal, state and county permitting process. After the permitting process, a detailed feasibility study will be completed over several years to inform investment considerations on the project. When an investment decision is made, Resolution Copper is expected to take around 10 years to build the infrastructure for the commencement of mining.

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