A federal appeals court has affirmed a ruling that blocks Rosemont Copper Co.’s bid to dig a 6,500-foot-wide open pit mine in the Santa Rita Mountains about 30 miles southeast of Tucson. In a split ...
A Canadian company has floated a plan to reopen the San Manuel copper mine more than 20 years after it closed northeast of Tucson, the Arizona Daily Star reported Sunday. Here are five takeaways from ...
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