Hudbay Minerals and Mitsubishi Corp. approved construction of the $2.07 billion Copper World mine in southern Arizona on Oct. 21. The final investment decision kicks off a 36-month build of an open-pit mine and a 60,000-ton-per-day concentrator about 31 miles southeast of Tucson, with first production targeted for the second half of 2029, ENR reported.
Hudbay owns 70% of the joint venture and Mitsubishi 30%. Hudbay expects more than 1,000 construction workers at peak and about 500 permanent operating jobs. The capital figure includes roughly $200 million of scope changes since the 2023 prefeasibility study.
Copper World construction scope
The base project is a conventional truck-and-shovel operation across four pit areas: East, Broadtop, West and Peach-Elgin. It adds waste-rock facilities, grade-segregated ore stockpiles, a tailings storage facility and supporting infrastructure. Average output over the first 10 years is about 102,000 tonnes of copper a year, according to Hudbay’s release.
The work doesn’t stop at startup. Hudbay has queued $710 million in follow-on projects: a $25 million molybdenum plant in year one, a $242 million in-pit crushing and conveying system in year three and a $443 million expansion that takes the concentrator to 90,000 tons a day in year four. Starting in year five, about a third of the tailings would be filtered, which Hudbay says lets the mill grow without any new water supply.
Financing and permits for the Arizona copper mine
Mitsubishi put in $600 million of initial equity for its 30% and could add up to $423 million more. Wheaton Precious Metals is paying a $230 million upfront stream deposit. The plan also carries about $650 million of project debt and $127 million of equipment financing, and Hudbay’s own contribution of about $500 million doesn’t start until 2028.
Permitting is where the project’s design pays off. The 15-year base case sits on private land and needs only state and local permits, and Hudbay says it has every major permit needed to build and start operating. An expansion onto adjacent federal land around year 10 would need federal approvals and could stretch mine life to 37 years. That’s a problem for the 2030s, not for the crews arriving now.
What contractors should watch on Copper World
Hudbay’s release names no engineering, procurement or construction contractor. Engineering for the initial operation is at feasibility level, and the expansions are still at prefeasibility. Expect the big packages, from earthworks and the concentrator to the tailings facility, to start moving now that the money is committed.
Labor will be the constraint. The Federal Reserve’s October Beige Book already flagged megaprojects crowding out other construction. Exchange’s Copper World project listing tracks the build. Right now it reads $2.07 billion, 36 months and no named builder.