THE RESOLUTION COPPER PROJECT is a proposed copper mine that can supply the world with the copper it needs to support ongoing technological and environmental innovation.
Resolution Copper – Potential to be the largest copper mine in the US.
For Immediate Release Superior, Arizona (March, 16, 2026) – The U.S. Forest Service and Resolution Copper, a joint venture owned by Rio Tinto and BHP that represents one of the world’s most significant untapped copper deposits, have completed a Federal land exchange required to unlock the full potential of the project. “This is a remarkable day for both Resolution Copper and Arizonans ...
SUPERIOR, Arizona (Nov. 5, 2025) – Resolution Copper has reached a major milestone with the completion of its multi-year, $200 million rehabilitation and deepening of the historic No. 9 Shaft, a critical step in paving the way for one of the nation’s most important new sources of copper and critical minerals. Originally constructed in 1971 by the Magma Copper Company in Oak Flat and ...
Copper is needed to meet clean energy goals, bolster supply chain resiliency and boost national security. Copper is also integral to everyday society, as it is used in virtually every electronic device made today, including the one you’re using to read this text. Copper is also used in plumbing to keep clean water flowing free of toxins and wiring to maintain comfortably warm and cool ...
Resolution Copper recognizes the significance of this project to local communities, Tribal Nations, and Arizona. We remain committed to transparency, regulatory compliance, and ongoing dialogue as the project progresses. For official federal documents and updates, the U.S. Forest Service maintains the authoritative public record.