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Arizona's Next Major Copper Mine
Augusta's 100%-owned Rosemont deposit is expected to produce 221 million pounds per year of copper once it begins production in 2012, accounting for as much as 10% of US copper output. In addition to copper, Rosemont will produce significant amounts of silver and molybdenum over its 20-year mine life. As of January 2009, Rosemont has proven and probable mineral reserves containing 546 million tons grading 0.45% copper, 0.015% molybdenum and 0.12 ounces per tonsilver in sulfide ore, and an additional 70 million tons at 0.17% copper in oxide ore.
Significant planning has gone into the facility design and construction of the Rosemont Copper mine, reducing its footprint to less than half the size of current mines in the Tucson area. The facility will be screened by perimeter buttresses to minimize the visual impact during both construction and operation and will not be visible from Green Valley, Vail, Sahuarita, Tubac or Tucson. The buttresses will both stabilize the soil and shield visual impact from state highway SR-83. Only a small portion of the final pit configuration will be visible from the highway.
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