The Don Mario district has three main mineral deposits of which the largest, the Don Mario Lower Mineralized Zone (“LMZ”) low-cost gold mine, was depleted in the fourth quarter of fiscal 2009 after producing more than 420,000 ounces of gold. The second, the Las Tojas open-pit gold mine, was depleted in March 2011 after producing nearly 50,000 ounces of gold. The open-pit mine on the third deposit, the copper-gold-silver Upper Mineralized Zone (“UMZ”), started up in April of 2011 and reached commercial production in January 2012.