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., iii iiiii~iiiiiuiii , <br />Surface Mine Reclamation Cost Estimate <br />Battle Mountain Resources Inc. <br />San Luis Mine <br />September 1999 <br />This reclamation cost estimate has been prepared evaluating current reclamation (i.e., <br />physical stabilization) cost obligations associated with previous/current mine and <br />beneficiation disturbances at the Battle Mountain Resources Inc.-San Luis Mine in <br />Costilla County, Colorado. This revision provides a site reclamation status report and <br />reflects wage and equipment rate adjustments (i.e., 1999) for remaining reclamation <br />obligations. Since concurrent reclamation practices were conducted during operations <br />(i.e.,1990-1996) and post-mine reclamation practices continued afrer the Octo~er 1996 <br />operations suspension, considerable reclamation obligations associated with th;, mine's <br />mining and beneficiation operations have been completed. This summary provides a unit <br />by unit reclamation cost revision. <br />The Steffen, Robertson, and Kirsten (SRK) reclamation cost estimate of May S, 1994 for <br />the San Luis Mine has been used as a template. <br />A. Unit Costs Revisions (1999 update) <br />A.1 Earthwork Contractors Costs <br />Contractor's costs for earth moving and haulage equipment have been obtained <br />from San Luis Valley Earttunovers (SLV) of Monte Vista, CO. SLV has been <br />contracted to complete all site reclamation activities. All equipment costs <br />assume the use of San Luis Valley Earthmovers equipment from Monte Vista, <br />CO. Each piece of equipment is available at the Monte Vista location. ConVactor <br />costs, including operator, are listed below: <br />k `~ ~ IL <br />• Caterpillaz D-8N tracked dozer @ $135/hour ' ~ :, <br />• Caterpillaz 627 scraper with 20 yd3 (heaped) capacity cr $140/hour ~J~L <br />• Rubber tired tractor with herd/drill seeder @ $50/hour / <br />• Water truck @ $75/hour ~'~ <br />• Caterpillaz 14G motor patrol (grader) @ $70/hour <br />• Caterpillar 980 rubber tired front-end loader with a 4 yd3 bucket capacity @ <br />$115/hour <br />• 20 yd3 rubber tired over-the-road end dump truck @ $65/hour <br />• Caterpillar 225 excavator with bucket family C type excavation @ $90/hour <br />A.2 Topsoil Replacement <br />Approximately 18 inches of topsoil replacement will require: <br />• 43,560 frZ/acre (1.5 feet)(I yd3/27 fr3) = 2,420 yd3/acre <br />• Topsoil will be placed using a Caterpillaz 627 scraper at a cost of $140/hour <br />PRELIMINARY DRAFT <br />FOR DISCUSSION PURPOSES ONLY <br />