Firm operates mine near Dragoon; failed to refinance its debt.
The Helvetia-Rosemont Mining District at the northern end of the Santa Rita Mountains is known for its copper deposits found in limestone, quartzite, and granite.
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.
Silver discoveries in the 1870s instigated mining in the Globe-Miami District.
A man who prosecutors said was the ringleader of a multimillion-dollar copper-theft scheme was sentenced Wednesday to prison.
In the final installment in this series, we’ve arrived at the question of how much the historic bedrocks of our economy, Arizona’s traditional Five C’s affect the current state economy.
We’re defining Tucson in 100 objects. The daily series began April 20. Follow along at azstarnet.com/100objects/
Depressed copper prices in the 1920s and ’30s saw the eventual closure of mining operations in the Silver Bell district. The nearby Sasco smelter had shut down by 1921 and the Sasco townsite was abandoned.
It seems like mining has always been big in Arizona. In 1736 the discovery of silver just below the current border with Mexico drew prospective Spanish miners northward into Southern Arizona. After Arizona became a U.S. territory, gold was found near Yuma in 1858 and in 1863 in the Bradshaw …
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.
Do you know Arizona’s traditional five C’s? I’m talking about the most important elements of Arizona’s economy during the state’s development from a U.S. territory through statehood and well into the 20th century.
We, the leaders of Tohono O’odham Nation and Pascua Yaqui Tribes representing more than 50,000 Southern Arizonans, are outraged over the Arizona Daily Star’s Jan. 19 editorial endorsing the proposed Rosemont Mine in the Santa Rita Mountains south of Tucson.
The White House is informally involved in the contentious Rosemont Mine issue, Coronado Forest Supervisor Jim Upchurch said today.
The final version of the Rosemont mine environmental impact statement is now online.
Editor’s note: This is the second in a two-part series on the Ajo mining district. To read the first part of this series go online to tinyurl.com/ajomine
Every year, thousands of Arizona residents email Rosie Romero’s website or call his radio show with questions about everything from how to prevent fires in their chimneys to what to do about the tree roots invading their sewer systems. One of his goals is to provide answers that suit the spe…
Coronado National Forest Supervisor Jim Upchurch is walking a scheduling tightrope for the proposed Rosemont Mine.
Phoenix-based Freeport-McMoRan Copper & Gold Inc. is cutting spending by $1.9 billion this year and next and started a process to sell some U.S. energy assets as the world's biggest publicly traded copper miner seeks to reduce its debt.
president of Mintec Inc., which won a President's E-Award for Exports.