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Asarco

Mine Tales: Operations at Silver Bell likely to continue for years

Mine Tales: Operations at Silver Bell likely to continue for years

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.

April 07, 2014 12:00 am Photos

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Ring's Reflections: Copper remains a huge economic factor in Arizona

Ring's Reflections: Copper remains a huge economic factor in Arizona

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 …

April 03, 2014 12:00 amLoading…
Mine Tales: Silver Bell district yielded millions of pounds of copper

Mine Tales: Silver Bell district yielded millions of pounds of copper

The earliest recorded mine in the Silver Bell Mountains was the Old Boot Mine in 1865. The mine, later renamed the Mammoth Mine, was developed by prospectors and financed by a group of Tucson merchants including Zeckendorf and Steinfeld, who were drawn to the heavy, black garnet-stained rock…

March 31, 2014 12:00 am Photos

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Asarco dedicates expanded mill at Mission Mine

Asarco dedicates expanded mill at Mission Mine

Tucson-based Asarco held a formal dedication ceremony this week — led by President and COO Manuel Ramos — of the expansion of the south mill at the Mission Mine south of town.

December 06, 2013 12:00 amLoading…

Asarco to pay $70,000 for Sahuarita dust violations

The mining giant Asarco will pay Pima County its second round of civil penalties and environmental reparations in three years over tailings dust blowing from its Mission Mine in Sahuarita into neighboring homes.

October 06, 2013 12:00 amLoading…
Top Three Picks for Tucson Mod Week

Top Three Picks for Tucson Mod Week

Tucson Modernism Week returns Friday with an entirely new schedule from last year but the same goals in mind.

October 03, 2013 12:00 amLoading…

Asarco, unions agree to continue talking

Officials with Asarco LLC say the copper mining company and unions representing employees at sites in Arizona and Texas have agreed to continue negotiating a labor contract.

June 30, 2013 12:00 amLoading…

Tucson-based Asarco fined $800K for delaying mine audit

Federal authorities have fined Tucson-based copper-mining giant Asarco more than $800,000 for failing to permit an audit of the company’s production from its Mission mine near Sahuarita.

June 21, 2013 12:16 pmLoading…
Horne: 18 in copper theft ring indicted

Horne: 18 in copper theft ring indicted

State Assistant Attorney General Mike Jette discusses the copper thefts. Mine workers are accused of selling the copper to recyclers at a fraction of the price. The recyclers would then resell it to Chinese importers, investigators say.

May 01, 2013 12:00 amLoading…
Horne: 18 in copper theft ring indicted

Horne: 18 in copper theft ring indicted

Eighteen people are facing charges in a multimillion-dollar copper theft ring involving Asarco employees, state law-enforcement officials said Tuesday.

May 01, 2013 12:00 am
Arizona Asarco employees implicated in copper theft ring

Arizona Asarco employees implicated in copper theft ring

Eighteen people are charged in a multi-million dollar copper theft ring involving Asarco employees.

April 30, 2013 12:07 pm Related
Big firms finding it hard to fill skilled jobs at Arizona mines

Big firms finding it hard to fill skilled jobs at Arizona mines

As part of training in 2011, UA student Mark Iobst helped guide a drill bit by communicating with the operator (not pictured) of a single-boom jumbo drive drill.

April 28, 2013 12:00 amLoading…
Star 200: Southern Arizona's big companies finding it hard to fill skilled jobs at Arizona mines

Star 200: Southern Arizona's big companies finding it hard to fill skilled jobs at Arizona mines

A second straight year of dropping copper prices has done little to slake Southern Arizona's two biggest mining employers' thirst for new workers.

April 28, 2013 12:00 amLoading…
Dust storm put Pima County over EPA air-quality limit

Dust storm put Pima County over EPA air-quality limit

High winds that sent huge dust clouds swirling last week caused Pima County to exceed federal air-quality standards for the first time in nearly four years, county officials said.

April 19, 2013 12:00 am Related Loading…
Emissions rose 22 percent in 2011, EPA report details

Emissions rose 22 percent in 2011, EPA report details

Mining companies are trying to manage the problems with tailings, such as these at the Asarco mine near Green Valley. Among the procedures Asarco is using to control dust is spraying additives onto tailings to create a crust that's less likely to blow off.

February 10, 2013 12:00 amLoading…
Toxic releases by Arizona mines increasing

Toxic releases by Arizona mines increasing

Activity at Arizona's mines is surging, and so is the release of toxic materials.

February 10, 2013 12:00 amLoading…

Mining concern to pay $60K fine for Marana spill

An Asarco mining operation has agreed to pay a $60,000 fine and take preventive steps valued at $50,000 to resolve water-quality violations caused by a June 2010 pipeline spill at the Silver Bell Copper Mine near Marana, state regulators said Tuesday.

January 30, 2013 12:00 amLoading…

Asarco unit to pay $110K to settle mine spill charges

An Asarco mining operation has agreed to pay a $60,000 fine and take preventive steps valued at $50,000 to resolve water quality violations caused by a June 2010 pipeline spill at the Silver Bell Copper Mine near Marana, the Arizona Department of Environmental Quality announced today.

January 29, 2013 1:32 pmLoading…

Asarco's Hayden plant cited over safety

Tucson-based Asarco LLC has received 51 citations for health and safety violations at its Hayden copper concentrator operation, the U.S. Department of Labor's Mine Safety and Health Administration announced Thursday.

August 31, 2012 12:00 amLoading…

Rio Nuevo hires finance chief

The Rio Nuevo District has someone to keep track of its finances.

August 31, 2012 12:00 amLoading…

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