Blue in the Face Saying Leave Oak Flat Alone: Arizona, USA

Key Takeaways

• US appeals court cleared land transfer of Oak Flat to Resolution Copper.
• Proposed mine would create 3.2 km wide, 305 m deep crater.
• Project threatens water for 180,000 residents for 50 years.
• 1.5 billion tons of toxic waste slated for unlined dump.
• Sacred site used for millennia faces destruction, sparking legal battles.

Pulse Analysis

The 2026 decision by the US 9th Circuit Court of Appeals effectively cleared the way for the federal government to hand Oak Flat over to Resolution Copper, a 50‑50 partnership between Rio Tinto and BHP. Oak Flat, a 2,000‑acre parcel in the Sonoran Desert, has been public land for decades and serves as a ceremonial ground for the Apache and other Native American tribes. The land exchange, approved without the permits needed for mining, marks the first time a sacred indigenous site has been transferred to foreign mining interests, raising immediate concerns about due‑process and tribal sovereignty.

If the block‑cave mine proceeds, it would excavate a crater 3.2 km wide and 305 m deep, displacing a water volume comparable to the annual supply of a city of 180,000 residents for half a century. Arizona is already enduring its worst drought in 1,200 years, and diverting that water would exacerbate shortages for households, farms, and industry. Moreover, the project plans to store 1.5 billion tons of tailings in an unlined dump within the Gila River watershed, creating a long‑term contamination risk that could cross the US‑Mexico border.

Beyond the immediate environmental stakes, the Oak Flat case could reshape the regulatory landscape for mining in the United States. A precedent that allows sacred lands to be exchanged for corporate assets may embolden other companies to pursue similar deals, prompting tighter scrutiny from the Bureau of Land Management and tribal courts. For Rio Tinto and BHP, the upcoming feasibility study will be a litmus test; a credible, independent assessment could halt the project, while a favorable report may trigger renewed legal battles and heightened public opposition.