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May Day Idaho Mine Complex 112 (d) Permit Application <br />• <br />6.4.4(f) Description of Ore Body and Underlying Stratum <br />Three types of mineralization are distinguished in the permit area: <br />• highly disseminated epithermal gold - silver - telluride thin veins (typically less than <br />five (5) feet); <br />• Limestone replacement deposits; and <br />• disseminated mineralization in porphyry veins. <br />Initial mining will occur within the limestone replacement deposits associated with the <br />May Day Veins at the May Day No. 1 adit. These veins are found within following <br />Upper Jurassic units: <br />• lower part of the Morrison Formation; <br />• Junction Creek Sandstone; <br />• Wanakah Formation; and <br />• Entrada Sandstone. <br />The ore bearing units are underlain by the Dolores Formation. <br />6.4.4(g) Commodities Extracted <br />Gold and silver are the primary commodities planned to be extracted. Gold and silver <br />concentrate will be sold to a smelter for further processing. <br />• <br />Tellurium may be extracted as a secondary commodity for use of solar panels in the <br />future. ]Presently, the extraction of tellurium is not planned. <br />6.4.4(h) Incidental Commodities to Be Extracted <br />There are no incidental products that will be extracted. <br />6.4.4(i) Explosives <br />Explosives will be used in accordance with the Blasting Report presented in the <br />Geotechnical Exhibit. Based on this assessment, blasting can occur without structural <br />damage. <br />May Day Idaho Mine Complex 112(d) Permit Application <br />September 21, 2010 <br />7 <br />