Toxic heavy metals may have leached into the water during heavy rains.
Rick Renzi was convicted of extortion, fraud, conspiracy and racketeering.
Pima plans to boost programs in high-demand fields of aviation, mining and manufacturing.
Inclines helped move ore downhill.
This Q&A with company officials covers Rosemont environmental, business, transportation issues.
Grupo Mexico, parent of Tucson-based copper producer Asarco LLC, is expected to complete a deal to take full control the Silver Bell mine west of Marana by acquiring an additional 25 percent ownership stake from a business partner.
Hudbay Minerals Inc. and Augusta Resource Corp. announced early today that the two companies have agreed on a friendly takeover bid for the British Columbia company that owns the proposed Rosemont Mine site near Tucson.
Frontier military outposts in Arizona began with several early presidios established along the Santa Cruz River.
Jerome’s population reached 15,000 during the peak of mining operations during the 1920s.
A Swedish company has agreed to acquire Tucson-based Mintec Inc., a maker of management and modeling software for the mining industry.
Located 56 miles southwest of Flagstaff on the east slope of Mingus Mountain — a 1,750-million-year-old volcanic tuff — the town of Jerome and its surroundings were once known as one of the greatest copper-producing areas on the planet.
PHOENIX — Arizona manufacturers and smelters are in line for a big tax break not being offered to other companies and individuals.
Toronto-based Hudbay Minerals Inc. on Monday announced a “final extension,” to May 5, of its offer to acquire Rosemont Mine developer Augusta Resource Corp.
Modular Mining Systems Inc. has expanded its operations on Tucson’s south side to keep pace with the company’s continued growth in global mining automation.
Toronto-based HudBay Minerals Inc. says it will make a bid worth nearly $500 million for all of the shares of Augusta Resource Corp., which is vying to build the Rosemont Mine in the Santa Rita Mountains southeast of Tucson.
The Pima County Board of Supervisors voted today to formally oppose Rosemont Mine, planned southeast of Tucson.
Rosemont Copper has met extensive government requirements to improve its mine proposal, and so it is time to accept that the mine will be built. We respect the laws, though flawed, that permit mining in a national forest in a region with limited water.
I would like to offer what I feel is a more accurate, fact-based picture of the Rosemont Mine’s approval process than the one written by Gayle Hartmann, president of the Save the Scenic Santa Ritas Association, in the Star guest opinion, “Just the facts: Rosemont still a long way from final …
In the end, money proved more important to the Reid Park Zoological Society than open land and a vision of reintroducing imperiled species.