The transfer of federal forest land in Arizona to a pair of international companies that plan to mine one of the largest copper deposits in North America is complete.

Tempe's Arizona Sonoran Copper is suddenly at the center of a billion-dollar chess move, with Hudbay Minerals proposing an all-stock takeover worth about $1.5 billion that would pull the Cactus ...

Oak Flat in Arizona is at the center of a struggle that's going on three decades. Here's everything that has happened with the proposed copper mine.

Establishes a major copper hub in southern Arizona with the addition of the Cactus project to Hudbay’s existing Arizona business, including the Copper World project Strategically positions Hudbay to ...

The U.S. Forest Service transferred ownership of Oak Flat to Resolution Copper on Monday, a major setback for opponents of a massive mine at a site the San Carlos Apache Tribe considers sacred.

Rio Tinto Plc RIO, BHP Group Limited BHP, and the United States Forest Service (USFS) have finally completed a land exchange in Arizona. The transaction was a major hurdle for the development of the ...

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 ...

Hudbay Minerals (TSX:HBM) has agreed to acquire Arizona Sonoran Copper Company in an all share transaction. The deal will combine Arizona Sonoran’s Cactus project with Hudbay’s Copper World ...

An update from Arizona Sonoran Copper Co. ( (TSE:ASCU)) is now available. Hudbay Minerals has agreed to acquire all remaining shares of Arizona Sonoran Copper Company in an all‑share deal valuing ASCU ...