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.
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.
Tucson Modernism Week returns Friday with an entirely new schedule from last year but the same goals in mind.
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.
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.
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.
Eighteen people are facing charges in a multimillion-dollar copper theft ring involving Asarco employees, state law-enforcement officials said Tuesday.
Eighteen people are charged in a multi-million dollar copper theft ring involving Asarco employees.
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.
A second straight year of dropping copper prices has done little to slake Southern Arizona's two biggest mining employers' thirst for new workers.
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.
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.
Activity at Arizona's mines is surging, and so is the release of toxic materials.
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.
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.
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.
The Rio Nuevo District has someone to keep track of its finances.
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 today.
A diesel-electric power shovel loads a new Komatsu haul truck at Asarco LLC's Mission Mine in Sahuarita. Five more Komatsus are due to arrive this year, and the fleet of trucks will eventually total 14.
Asarco has taken delivery of the first of 14 massive haul trucks ordered as part of an expansion of the Mission mining operation in Sahuarita, which will add nearly 50 jobs.