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TrustFinance Global Insights
3月 17, 2026
2 min read
58

Global mining corporation Rio Tinto announced it has gained control of a key land parcel in Arizona, essential for developing the Resolution Copper mine. This move effectively concludes a prolonged legal dispute with the San Carlos Apache tribe over the site, which is estimated to contain over 40 billion pounds of copper.
The land transfer was facilitated through a swap with the U.S. Forest Service, an arrangement legislated by the U.S. Congress in 2014. Rio Tinto exchanged 5,400 acres of its land for access to the 2,400-acre copper-rich site. The finalization came after a U.S. appeals court recently rejected another request to halt the transfer, and the Supreme Court did not intervene. The project has faced over two decades of opposition from Native American groups who hold the site, known as Oak Flat, as sacred.
The Resolution Copper mine is positioned to be one of the largest copper producers in the United States, addressing the rising demand for the metal driven by the energy transition, including electric vehicles and renewable energy infrastructure. Rio Tinto plans to launch a $500 million drilling campaign to explore the deposit. The project, a partnership where Rio Tinto holds a 55% stake and BHP Group holds 45%, is anticipated to bolster domestic supply chains and create significant economic activity.
With the legal challenges resolved, Rio Tinto and BHP will advance the project, starting with extensive exploration. The development highlights the strategic importance of copper for modern economies and the ongoing tension between industrial resource extraction and indigenous land rights. The timeline for actual copper production remains contingent on the results of the upcoming exploration phase.
Q: What is the Resolution Copper project?
A: It is a large-scale copper mining venture in Arizona, USA, operated by Rio Tinto and BHP, targeting a massive copper deposit crucial for the tech and green energy sectors.
Q: Why was the project controversial?
A: The mine's location, Oak Flat, is a sacred religious site for the San Carlos Apache people, which led to more than 20 years of legal and social opposition to the land transfer.
Q: What is the next step for the project?
A: Rio Tinto will initiate a $500 million drilling and exploration program to further assess the copper deposit before proceeding with development and production plans.
Source: Reuters

TrustFinance Global Insights
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