Mining Method

The most viable way to recover the ore body is by a well-established underground mining method called block caving. Block caving is safe, environmentally sound, and cost-effective for mining a large, deep orebody.

In block caving, a large section of ore is initially undercut by drilling and blasting, causing it to collapse under its weight. The blasted ore breaks apart and falls into a series of pre-constructed funnels and access tunnels to form ore extraction drawpoints. From the drawpoints, ore will pass through a series of handling systems to an initial crushing circuit underground before transferring to the above surface Concentrator Complex.

Concentrating

In the second step of the production process, we convert the ore from a low-grade material into a concentrate of high-grade copper inside the Concentrator Complex.

The technique all begins with a wet grinding process that turns the crushed ore into a slurry and transports it to flotation cells. When mixed with water, reagents, and air, the copper minerals produce a bubbly froth. The bubbles with copper are skimmed and filtered to produce copper concentrate.

The concentrate, which contains about 29-31% copper, will then be sent to customers for further processing.

Smelting and Refining

When the concentrate leaves our facility, it will complete the smelting and refining phases to separate the copper from other metals. The final result is a 99.999% pure copper cathode, which is an essential raw material for the processing industry. Copper originating from 7,000 ft below the surface will eventually find its way into electrical wiring, electronics, power generation and transmission, automotive applications, and antimicrobial medical products.

Our Work

Meet Cierra Navarrette: Championing Sustainability at Resolution Copper

At Resolution Copper, we believe in building a sustainable future—one where mining and environmental stewardship go hand in hand. Few embody this vision better than Cierra Navarrette, an Environmental Advisor whose story is as deeply rooted in the Copper Triangle as the land she works to protect.

Building a Brighter Future: Resolution Copper’s Commitment to the Copper Triangle

At Resolution Copper, we believe in the power of community. For us, being a proud member of the Copper Triangle means more than just mining copper; it means investing in the people, businesses, and the environment that make this region thrive. This month, our team doubled down on our commitment to building a brighter future for our neighbors through partnerships, volunteerism, and community support.

A Day in the Life: Brad Lupe, Tribal Liaison

At Resolution Copper, every team member has a story, and today, we’re proud to share the journey of Brad Lupe, a Tribal Liaison who is making a lasting impact on communities across Arizona. Brad’s work is driven by a deep connection to his heritage, his upbringing on the White Mountain Apache Reservation, and his commitment to creating opportunities for tribal youth.

Building Bridges: Leslie Burnette’s Commitment to Honoring Tradition and Community at Resolution Copper

At Resolution Copper, we understand the importance of fostering strong relationships with the communities we work alongside. Leslie Burnette, our Senior Tribal Community Advisor, exemplifies this commitment in her role.

Honoring Our Veterans: From Serving Our Country to Powering Its Future

At Resolution Copper, we’re proud to honor the veterans on our team who’ve made the journey from military service to the mining industry. Their dedication to serving our country has seamlessly transitioned into a commitment to powering its future, as they now help provide the copper essential to our daily lives.

Boyce Thompson Arboretum and Resolution Copper Team Up for a $750,000 Boost in Educational Programs

Boyce Thompson Arboretum (BTA) and Resolution Copper are taking education to the next level! We’re beyond excited to announce a game-changing $750,000 investment in BTA’s educational programs, kicking off a three-year journey to create new opportunities for learning and discovery in the Copper Corridor.

Resolution Copper continues investment in local kids and teachers through $900,000 partnership with the Superior Unified School District

Resolution Copper, a joint venture between Rio Tinto and BHP, announced an agreement with the Superior Unified School District todonate $900,000 to fund educational opportunities for students in the district.

Samson Belvado – From Apprentice to Future Environmental Scientist

At Resolution Copper, we believe that investing in our people is key to protecting the environment and building a sustainable future. One standout example of this is Samson Belvado, a proud member of the San Carlos Apache Tribe and a passionate Environmental Apprentice.

Strengthening Local Partnerships with Superior Environmental Solutions

Mario Sanchez, the dedicated owner of Superior Environmental Solutions, has been a cornerstone of our partnership network since the very beginning.