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D.4 Proposed Operations <br />This section describes the proposed operations at the Topaz Mine. <br />D.4.1 Resource Estimate <br />The mine will be developed to ultimately support a maximum ore production rate of <br />approximately 5,000 to 6,000 tons per month. It is estimated that a maximum of 25,000 tons of <br />ore will be produced in 2007 and a maximum of 70,000 tons of ore will be produced annually. <br />The actual rate of production will vary based on mine development and market conditions. An <br />ore stockpile density of 130 pounds per cubic foot (lbs/ft3) was assumed to convert tonnage to <br />cubic yards. Based on previous mining in the Sunday Mine Complex, an average waste-to-ore <br />ratio of 1:2 for mine production is assumed. The waste-to-ore ratio is expected to be higher <br />during development of the decline and laterals, up to 1:1, and is expected to decrease significantly <br />during later production resulting in the generation of less waste rock. <br />D.4.2 Estimated Acreage of the Existing and Proposed Affected Lands <br />The total affected lands associated with the Topaz Mine will include surface facilities at the portal <br />area, vent hole pads, and access roads. The affected lands are outlined in Table D-1. <br />Table D-1 <br />Affected Lands <br /> e + <br />+ a' o a e e <br />~, e o <br />Surface Facilities Area and Diversion Channels 7.7 3.8 11.5 <br />Portal Access Road 2.2 0.0 2.2 <br />Vent Hole T-I Pad (Access off main road, no 0.1 0.0 0.1 <br />new access road) <br />Proposed Vent Hole Pads (T-2 though T-6) - 0.0 1.25 1.25 <br />To az Mine <br />Access Roads to Vent Holes (9,977' long x 12' 0.0 2.75 2.75 <br />wide) <br />Potential Future Vent Holes and Access Roads NA NA 12.2 <br />(undefined locations within the rmit boundar ) <br />Total 10.0 7.8 30.0 <br />Note: <br />~ The surface disturbance associated with the existing vent hole is permitted under <br />an exploration permit and will be included in the expanded affected azea under the <br />112 permit. <br />5-23-2007 Exhibit D Mining Plan D-5 <br />