The Miguel Auza property is 14,000 ha and lies on the eastern flank of the Fresnillo Mexican Silver Trend some 150-200 km north of the cities of Fresnillo and Zacatecas, both of which have and continue to be the source of a large percentage of Mexican silver, lead and zinc production. The property covers numerous high- and low-sulphide epithermal veins carrying Ag, Au, Pb and Zn and has seen a large amount of historic mining since the time of the Spaniards, most recently in 2008 when Silver Eagle Mines, carried out mining and milling on the Calvario Vein system.
Excellon acquired Silver Eagle in 2009 in an all-share transaction, primarily for the purpose of using the newly built 650 tpd flotation mill to process ore from the Platosa Mine. The Company has been trucking Platosa ore to Miguel Auza for processing since the acquisition.
The Company carried out a modest exploration program at Miguel Auza between the fall of 2009 and the fall of 2010 and while certain areas were highlighted as meriting further early stage exploration work.