Rosemont Tailings Geochemistry Sample Sources

In addition to the tailings samples prepared in 2006-2008, six (6) new samples were prepared to better characterize the dry stack tailings associated with the proposed Rosemont Copper Project (Project). Tailings samples were generated from each of the five (5) major sulfide ore rock units and one (1) composite sample was generated from ore material representing production years 4 through 7.