Resolution Copper protects human health and the environment by making safety our top priority and by working to minimize environmental impacts. We use a globally consistent management system called Critical Risk Management to guard against the most sever safety incidents and our environmental planning is integrated into the full life-cycle of project planning – from environmental assessments to mine design, construction, through startup operations and decades down the road, closure. Our systematic, structured and disciplined approach to measure progress and track accountability is world-class.

Our intent is not simply to meet applicable safety and environmental standards, but where possible, exceed those standards.

Air quality

Mining can create dust and, like any business, contribute to greenhouse gas emissions. To make sure our community has clean air, we would:

  • Crush rock underground and in enclosed buildings
  • House stockpiles of ore in covered buildings
  • Spray water on roads and use dust-suppressing hoods and enclosures throughout the operation

Of course, we monitor the air to make sure it meets the US Environmental Protection Agency’s clean air standards and will share the results of our extensive air monitoring network with the community.


Oversized equipment and blasting to break up rock can create noise and vibration. Since most of our rock breaking work would happen underground or in new, fully enclosed buildings, which will help minimize the noise. The permitting process will look at the likely noise created by our operation and outline our work to manage it.

Protecting cultural heritage

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.

We’re working hard to better understand what matters to our all our neighbors and make sure we balance their interests with our own.

Protecting Native American culture and sacred sites

We’re required to comply with all laws related to Native American cultural and sacred sites, and the permitting process requires formal consultation between the US government and the governments of Native American tribes. These governments look at plans for the proposed mining operation and any impacts on cultural resources and agree on steps to avoid, minimize or mitigate them.

Special protection for Apache Leap

Under federal legislation, more than 800 acres of land will be set aside to permanently protect and preserve Apache Leap, while the Forest Service will work with stakeholders to develop a land management plan for the area. We’ve designed our mine plan to protect Apache Leap and will monitor the area throughout construction and operation of the proposed mine, and as well as after it is closed and the land reclaimed.

The Oak Flat Picnic Area and Campground

Included in the land exchange is the 760-acre Oak Flat Picnic Area and Campground Withdrawal.

In 1955, the government restricted mining on Oak Flat, along with many other lands in Arizona and New Mexico, to protect capital improvements it had made on the land. In 2004, the United States Bureau of Land Management issued an order that allowed mining activities to resume in many of these areas.

We respect the importance of the Oak Flat area to many Native American people, and have committed to give the public access to the Oak Flat Campground for as long as it is safe. We hope we can work with neighboring Native American tribes by answering and addressing their concerns.

Building strong Native American partnerships

At Resolution Copper, we know we get the best results by listening to community perspectives and partnering with community stakeholders, including Arizona’s Native American Tribes.

We respect the sovereign nature of Tribal communities and recognize that Tribes have cultural interests that go beyond the border of their reservations. It is our absolute aim to work together to preserve Native culture and provide direct employment, job training, education and commercial opportunities for Native American-owned businesses that will last for decades to come.

As part of this work, our parent company, Rio Tinto, partnered with Harvard University to produce a case study, The Harvard Project on American Indian Economic Development, capturing how mining industries and tribes can increase economic development by establishing a trusting relationship.

Resolution Copper is committed to opening lines of communication with the leaders of the San Carlos Apache Tribe, who currently oppose the project. For more than a decade, we have reached out to them personally and to other members of the Council with numerous requests to meet. While council members have never taken us up on our offers to sit down together, we are still hopeful that this can happen, and we remain committed to opening lines of communication with the Tribe.

Protecting and restoring nature

We share our desert home with diverse plants and animals, and we’ve designed our proposed operations to protect them by:

  • Locating future mining facilities in areas where existing mining and infrastructure exist
  • Removing vegetation only when it is absolutely necessary, and saving important plants like Saguaro cactus so we can use them when we reclaim the area
  • Using covers and containers to keep birds and other animals out of areas of the mine where they could be injured
  • Creating migratory bird and wildlife protection plan for process water ponds and tailings

We’re required to replace any native plants or animal habitats we do disrupt somewhere in the area. That means the impact of our operations on biodiversity would be neutral.