Agency draws flak from environmentalists for its handling of Trench Mine runoff.
Toxic heavy metals may have leached into the water during heavy rains.
Federal regulations will cut sulfur dioxide emissions 85 percent at the smelters.
But failure wouldn’t prevent owner from getting the water permit it needs.
Opponents wonder if Hudbay is seeking to expand the proposed mine.
Bowden could grasp essence of a person in minutes, but could stick to a single subject for years.
Existing forecasts "critically underestimate" risks in Southwest, new study says.
Construction of the outlet center in Marana is set to start this week.
But developer isn't talking about its plans or whether tenants have been signed up.
Wildlife service supervisor changed his staff's findings, records show.
Possible ramifications loom for Rosemont Mine, Fort Huachuca.
Her unflagging devotion to bats will be missed, authorities say.
A declining Lake Mead could speed plans for full-scale recycling.
Navajo would close by 2044. Sierra Club may sue to block plan.
Critics say any mitigation deal could help the mine win approval.
This Q&A with company officials covers Rosemont environmental, business, transportation issues.
Environmentalists continue to push for a coal-free plant in Tucson.
Reservoir that supplies Western drinking water is at record low level.
Beautiful lands are for sale everywhere — will they be preserved or developed?
David Schutz paid $4.6 million in 1986 for 540 acres in the Tortolitas; now he will ask nearly $3 million for the parcel at auction in August.
The northern Mexican gartersnake has joined the ranks of federally protected species.
Arizona will be hit harder than most states, a new report says.
2011 wildfire was started by a company employee.
But stock prices jumped for Rosemont Copper's parent company.
Proposed Rosemont Mine now has more money to fight opponents
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.
The Santa Cruz River hasn’t flowed through Tucson in 70 years — but some local officials would like to change that.
For the first time, the state agency that operates the multibillion-dollar Central Arizona Project warns that water shortages could hit Tucson and Phoenix as soon as five years from now.
A planned project for 7,000 homes and apartments in Sierra Vista now sits in legal limbo due to a judge’s ruling overturning state approval of it.
More than four years after buying the old Twin Buttes copper mining site south of Tucson, Freeport McMoRan Copper & Gold Inc. still has no plans for reopening it, a spokesman says.
Duncan and Connie Creed say they no longer can enjoy the glow of sunsets in their backyard like they could when they moved into their Green Valley house 11 years ago. The reason, they say, is the stand of mine tailings just west of their home that towers like a huge mesa over the community.
A community group and a retired air-pollution scientist filed separate lawsuits Wednesday challenging Arizona’s approval of an air-quality permit for the proposed Rosemont Mine.
The difference in size and scale between the current owners of the proposed Rosemont Mine and its suitor is staggering, their financial reports show.
The federal government formally announced Friday that it will restart reviews of the proposed Rosemont Mine’s impacts on eight endangered species including the ocelot.
The discovery of an ocelot in the vicinity of the proposed Rosemont Mine site, combined with other endangered-species issues, means more delay for the open-pit copper project.
In its second warning letter in three months, the U.S. Army Corps of Engineers formally notified Rosemont Copper last week that the company’s plan to mitigate for its mine’s impacts on creeks and washes is inadequate.
A once-popular boarding school in the Sabino Canyon area — which attracted children of prominent families — is taking a year off to reinvent itself due to sagging enrollment and finances.
What a difference a real estate bust makes.
It wasn’t only a conservationist who recorded this week’s meeting of the Colorado River with the Gulf of California’s high tides.
The Colorado River met the sea Thursday for the first time in at least 16 years.
Whether it’s saguaros, quaking aspens, tundra forests or coral reefs, the Southwest and the country are seeing climate change impacts on a range of species and landscapes, says an Arizona State University scientist.
The Southwest is heating faster than the rest of the country. Sea levels are rising. Oceans are acidifying. The North Atlantic’s hurricanes are intensifying. Piñon and lodgepole pines are dying.
Temperatures in the Southwest are rising faster compared to those of the U.S. as a whole, a new White House report ion climate shows.
The U.S. Forest Service didn’t meet its own legal deadline last week for responding to objections to its plans to approve the Rosemont Mine, saying it needs more time.
In a decision that both sides are spinning as a victory, the British Columbia Securities Commission says that under certain circumstances, it will put an end to Augusta Resource Corp.’s shareholder rights plan by mid-July.
Nearly 30 years ago, Steve Nelson started kayaking the Colorado River Delta in search of adventure and a journey through history. He ended up falling in love with the place.
The latest permitting delay for the Rosemont Mine leaves a raft of unanswered questions about when and how the final decisions on the project will be made.
The takeover battle for the Canadian company that owns the Rosemont Mine site hits a climactic moment in Vancouver, B.C. today (Tuesday, April 29).Officials of Augusta Resource Corp. and Hudbay Minerals Inc. will argue over whether the British Columbian government should put a halt to a shar…
A growing phalanx of companies in Tucson and Southern Arizona service the mining industry.
The dispute between state and federal environmental agencies over pollution risks from the Rosemont Mine boils down to debates over sediment, runoff, waste rock and impacts of groundwater removal. This involves a ton of technical detail, and this blog will try to explain some of it.