/ About Us

About Us

The Resolution Copper project is a proposed underground mine 60 miles east of Phoenix, Arizona, near the town of Superior. The Arizona project is a joint venture owned by two global companies, Rio Tinto (55%) and BHP (45%).

The ore deposit lies nearly 7,000 feet below the earth’s surface. It represents one of the most significant untapped copper deposits today, with an estimated copper resource of 1.787 billion metric tonnes at an average grade of 1.5% copper.

We have strong community and regional support for the project, which has the potential to become one of the largest copper mines in America, add $1 billion a year to Arizona’s economy, and create thousands of local jobs in a region where mining has played an important role for more than a century.

The Resolution Copper mine is vital to securing America’s energy future and infrastructure needs with a domestic supply of copper and other critical minerals. The project is advancing through the federal permitting process. In April 2025, the U.S. Forest Service issued a 60-day notice of its intent to republish the Final Environmental Impact Statement (FEIS) and Draft Record of Decision (DROD), marking an important step forward. Public input remains a key component of the review process.

Resources

Our Work

The Legacy of Mining in Arizona: Tim Gotto’s Story

In Arizona, mining isn't just part of the past. It's the backbone of the present and the promise of the future. For more than 100 years, copper has helped shape this state. Since 1910, Arizona has led the nation in copper production. From the red rock cliffs of the Copper Triangle to the machinery that hums deep underground, the industry has powered homes, built cities, and sparked innovation across generations.

$8.9 Million Strong: Investing in the Copper Triangle’s Future

This Economic Development Week, we’re celebrating the partnerships, investments, and milestones that are helping the Copper Triangle thrive. Since 2019, we’ve invested more than $8.9 million into projects that drive long-term growth — from workforce programs and school upgrades to trail revitalization, tourism boosts, and business development.

$2 Billion Invested for a Smarter, Stronger Copper Future

At Resolution Copper, we’ve reached a major milestone: over $2 billion invested in developing and permitting one of the most important copper projects in the United States. This number tells a bigger story — one of progress, partnerships, and purpose.

Mother. Daughter. Miners. A Legacy Built in Superior.

At Resolution Copper, mining isn’t just about the rock we move, it’s about the people who move it. And this Mother’s Day, we’re proud to spotlight two of those people: Jessica and Sabrina Castillo. A mother-daughter duo with deep roots in Superior, Arizona, these two powerhouse women are proving that mining, family, and community can go hand in hand - hard hats and all.

The People Behind the Project

At Resolution Copper, mining isn’t just about extracting a resource—it’s about people. It’s about hometown pride, career growth, environmental stewardship, and creating opportunities right here in the Copper Triangle.

Cookies, Copper & Curiosity: Sparking STEM Learning

At Resolution Copper, we believe education is one of the most powerful tools to support and strengthen our communities—and we’re all in. Our latest Reading and Discovery Educational Initiative brought that belief to life in classrooms across the Copper Triangle.

Resolution Copper Welcomes Inclusion in Federal Transparency Initiative

Resolution Copper welcomes the White House’s announcement designating the Resolution project as part of the Federal Permitting Improvement Steering Council’s list of critical mineral “transparency projects.”

USFS Issues 60-Day Notice of Final Environmental Impact Statement Republication for Resolution Copper Project

Today, the United States Forest Service issued a legally required 60-day notice of the agency’s intent to republish a Final Environmental Impact Statement (FEIS) for the Resolution Copper project.

Geologist’s Perspective – The Resolution Ore Body

When Adam Schwarz first arrived at Resolution Copper in 2005, he didn’t need much convincing. One look at the core samples coming out of the ground—shimmering with high-grade copper minerals—and he was hooked. “That was the moment,” Adam recalls. “I knew this was where I wanted to be.”