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Resolution Copper

Resolution Copper is a mining company developing a large-scale underground copper project in Arizona, United States. The company is a joint venture equally owned by Rio Tinto and BHP, two of the world's largest mining groups. Resolution Copper's flagship project is located near the town of Superior in Pinal County, Arizona, and is expected to become one of the largest copper mines in North America once operational. The deposit contains an estimated 1.8-billion tonnes of ore and could supply about 25% of US copper demand. The project involves the construction of deep underground shafts, including No. 9 Shaft and No. 10 Shaft, to access the orebody located more than 2 100 m below the surface. Copper from the mine is classified as a critical mineral by the US government due to its importance in renewable energy, electric vehicles and national infrastructure. The project has faced environmental and cultural heritage challenges, particularly concerning the Oak Flat area, which is sacred to the San Carlos Apache Tribe. Resolution Copper has invested billions of dollars in exploration, engineering and community engagement since the joint venture was formed in 2001. The company works with contractors such as Redpath USA and Oddonetto Construction on shaft-sinking and underground development activities.

Resolution Copper News


The Resolution Copper project
Resolution Copper Mining approves $144m investment in Arizona project
6th November 2026 By: Sabrina Jardim

Resolution Copper Mining, a joint venture between Australia-headquartered miners Rio Tinto and BHP, has approved a $144-million investment in the next phase of development at the Resolution Copper... 


An image of the Resolution Copper project
Resolution Copper commits $54m to establish Tribal Nation trust
30th July 2026 By: Tasneem Bulbulia

US-focused Resolution Copper has provided $54-million to establish the Resolution Copper Tribal Trust, a perpetual endowment that will deliver yearly funding to 11 Tribal Nations located in Arizona... 


Image of native copper ore
Resolution copper mining project, US – update
27th March 2026 By: Sheila Barradas

Rio Tinto might need to export some of its copper concentrate, as a result of the challenging economics of smelting in the US. 


Rio Tinto expects Resolution Copper mine to open by mid-2030s
Rio Tinto expects Resolution Copper mine to open by mid-2030s
25th March 2026 By: Reuters

Rio Tinto aims to open Arizona's Resolution Copper mine by the mid-2030s but may need to export some of its copper concentrate due to the challenging economics of smelting in the US, a senior... 


Image of native copper
Resolution copper mining project, US – update
20th March 2026 By: Sheila Barradas

Rio Tinto and BHP have secured key land needed to advance the project. 


Land swap unlocks next phase of Rio Tinto and BHP's Resolution Copper project
Land swap unlocks next phase of Rio Tinto and BHP's Resolution Copper project
17th March 2026 By: Mariaan Webb

Mining majors Rio Tinto and BHP have secured key land needed to advance the Resolution Copper project in Arizona, following the completion of a long-contested federal land exchange. The exchange... 


Resolution Copper completes $200m deepening of historic shaft
Resolution Copper completes $200m deepening of historic shaft
6th November 2025 By: Mariaan Webb

US-focused Resolution Copper has completed the $200-million rehabilitation and deepening of its historic No. 9 Shaft in Arizona. Originally constructed in 1971 by Magma Copper Company and used as... 


Trump blasts appeals court for halting Resolution Copper land transfer
Trump blasts appeals court for halting Resolution Copper land transfer
20th August 2025 By: Reuters

US President Donald Trump on Tuesday criticized an appeals court's decision to temporarily block federal officials from completing a land transfer needed for Rio Tinto and BHP to develop Arizona's... 


Resolution project advances as USFS republishes enviro report
Resolution project advances as USFS republishes enviro report
19th June 2025 By: Mariaan Webb

The US Forest Service (USFS) has republished the final environmental impact statement (FEIS) and draft record of decision for the Resolution copper project in Arizona clearing a regulatory hurdle... 


US Supreme Court spurns Native American challenge to Rio Tinto's Arizona copper project
US Supreme Court spurns Native American challenge to Rio Tinto's Arizona copper project
27th May 2025 By: Reuters

The US Supreme Court declined on Tuesday to hear a Native American group's bid based on religious rights to block Rio Tinto and BHP from gaining control of Arizona land needed to build one of the... 


US judge halts land exchange for Rio Tinto copper mine opposed by Native Americans
US judge halts land exchange for Rio Tinto copper mine opposed by Native Americans
12th May 2025 By: Reuters

A US federal judge on Friday temporarily blocked the Trump administration from transferring land to Rio Tinto and BHP for a copper mine opposed by Native Americans, citing the Supreme Court's... 


US President Donald Trump
Trump administration fast-tracks 10 mining projects in critical minerals push
9th May 2025 By: Mariaan Webb

The Trump administration has moved to expedite permitting for ten mining projects across the US as part of a broader effort to boost domestic production of critical minerals and reduce reliance on... 


Resolution Copper
US judge to rule by May 14 on Rio Tinto copper project opposed by Native Americans
8th May 2025 By: Reuters

A US federal judge said he will rule by May 14 on whether to block the Trump administration from transferring Arizona land to Rio Tinto and BHP to build a major copper mine opposed by Native... 


US President Donald Trump
Trump Administration fast-tracks 10 mining projects in critical minerals push
22nd April 2025 By: Mariaan Webb

The Trump administration has moved to expedite permitting for ten mining projects across the US as part of a broader effort to boost domestic production of critical minerals and reduce reliance on... 


Trump to approve land swap for Rio Tinto copper mine opposed by Native Americans
Trump to approve land swap for Rio Tinto copper mine opposed by Native Americans
22nd April 2025 By: Reuters

The Trump administration has said it would approve a land swap needed for Rio Tinto and BHP to build one of the world's largest copper mines, despite concerns from Native Americans that it would... 


Jacob Stausholm delivered Rio Tinto's 2024 results from the US, where he is meeting with officials.
Rio Tinto CEO weighs in on Trump’s aluminium tariffs
20th February 2025 By: Mariaan Webb

Rio Tinto CEO Jakob Stausholm has expressed caution regarding the potential impact of US President Donald Trump’s proposed 25% import tax on all steel and aluminium, stating that the ultimate... 


Rio Tinto CEO Jakob Stausholm
Rio Tinto aims for 1Mt/y copper output in push for energy transition materials leadership
17th January 2025 By: Mariaan Webb

Rio Tinto, one of the world’s largest mining companies, has reaffirmed its goal of producing one-million tonnes a year of copper by the end of the decade, as part of its strategy to become a global... 


Rio Tinto CEO Jakob Stausholm
Rio Tinto reinforces strategy for diversified growth, targets 1Mt/y of copper
4th December 2024 By: Mariaan Webb

Rio Tinto, one of the world’s largest mining companies, has reaffirmed its goal of producing one-million tonnes a year of copper by the end of the decade, as part of its strategy to become a global... 


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pqt: 0.06s - ct: 0.114s - 259pq - 2rq
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