Tailings

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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 am Comments

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 am Comments

Court OKs settlement over hazardous waste at AZ mine

U.S. District Court for Arizona has approved a $6.8 million settlement that Phoenix-based Freeport McMoRan will pay over the past release of hazardous substances from the Morenci mine.

July 03, 2012 2:02 pm Comments