Arizona & Copper

Arizona has a diverse cultural history, especially here in the Copper Triangle. Mining and ranching have been an integral part of this community for more than 100 years, and the area is home to many federally recognized tribes and to the places where they have historic and cultural ties.

Our project helps generate social and economic benefits for local communities while working towards a mining operation that will produce up to 25% of the U.S. demand. Copper is a cornerstone of Arizona’s history and economy. Since 1910, the state has been the nation’s leading producer of copper. Today, 68% of all the copper produced in the U.S. comes from Arizona. The copper star at the Arizona flag center highlights the industry’s importance to the Grand Canyon state.

Copper’s impact on Arizona*

  • $6.9 billion worth of minerals produced (2019)
  • Jobs for 39,000 Arizonans (2018)
  • $102,859 average annual industry wage (2017)
  • $1.2 billion direct payrolls to Arizona workers (2018)

*The University of Arizona, Lowell Institute for Mineral Resources

The Copper Triangle

There is no doubt that mining changes the landscape. We’re committed to protecting the land and surrounding area while we operate and after mining is complete.

Since 1863, when prospector Jacob Waltz laid claim to gold in a patch of Arizona desert just 60 miles east of Phoenix’s burgeoning city, the Pioneer Mining District has been at the heart of the state’s mining industry.

While Waltz’s claim continues to draw people searching for his legendary “Lost Dutchman’s Mine,” mining in the district began in 1875, when the King Mine began pulling silver out of the ground.

In 1912, the Magma Copper Mine started up, an operation that continued through the mid-1990s, built the nearby town of Superior and came to define the Pioneer District and its rich stores of copper.

Today, the Resolution Copper team is cleaning up this historic mining site and developing a plan in consultation with the community and other stakeholders to safely develop copper that lies nearly a mile beneath the surface of the original Magma Mine.

Our Work

Successful Completion of No. 9 Shaft Sinking Galloway Project

We are thrilled to announce the successful completion of the No. 9 Shaft Sinking Galloway project, a critical endeavor that brings the No. 9 Shaft up to the 2024 standards of Resolution Copper, Rio Tinto, and Redpath. This project was essential to ensure the safe deepening of No. 9 Shaft, involving comprehensive structural and electrical upgrades.

Resolution Copper 2023 Yearend Review

Throughout my career with Resolution Copper, I have been constantly impressed by the hundreds of people who keep the operation running, and 2023 was no different. In becoming President and General Manager in March 2023, I’ve continued to see the best of our team


Representatives from Resolution Copper and communities and organizations sign Good Neighbor Agreement

Statement regarding Ninth Circuit Court of Appeals en banc ruling in the Apache Stronghold v. United States

We welcome the Ninth Circuit’s decision to uphold the lower court’s ruling.

Arizona’s mining potential noticed by national energy and Congressional leaders

The Copper State has seen increased interest from industry leaders and government representatives as the push to bolster American mining capabilities gains momentum.

Resolution Copper owners’ partner to develop state-of-the-art water conservation technology

Resolution Copper owners BHP and Rio Tinto partner to develop state-of-the-art water conservation technology

Women in Mining

At Resolution Cooper, women are leading efforts to support nearly 25% of the United States’ annual copper demand, providing a material that is integral to daily life and enabling the energy transition. While mining is typically seen as a male dominated field, women at Resolution Copper are making their mark on the mining industry and paving the way for future generations of woman miners. It starts at the top with Vicky Peacey, President and General Manager of Resolution Copper

Good Luck Scholarship Students

With school starting this month across the State of Arizona, Resolution Copper wishes our fifteen 2023 scholarship recipients good luck as they begin their collegiate careers at Central Arizona College, Arizona State University, Northern Arizona University, Pima Community College, University of Arizona, Embry-Riddle Aeronautical, Grand Canyon University, and Universal Technical Institute

Resolution Copper Receives Rocky Mountain Mining Institute Safety Award For Second Year In A Row

Resolution Copper accepted the Rocky Mountain Mining Institute’s (RMMI) 2023 Safety Award for Small Underground Mine. For the second year in a row, Resolution Copper is identified as the safest among