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<br />iii iiiiiiiiniiiiii <br />BATTLE MOUNTAIN RESOURCES, ]NC. <br />Cis-' -;1.'~i) <br />July 12, 1993 <br />J U L 14 1993 <br />Mr. Larry Oehler <br />Division of Minerals and Geology 9~,1TlE Mp,1NTAIN <br />1313 Sherman Street, Room 215 i~,e~,,.,,. , ,.,..~,.._....,._.,,yy ocawANv <br />Denver, Colorado 80203 <br />Re: Battle Mountain Resources, Inc. - San Luis Project <br />Permit No. M-88-112 <br />1993 Tailings Disposal Area Embankment Lift <br />Dear Mr. Oehler: <br />Battle Mountain Resources, Inc. (BMRI) - San Luis Project has <br />initiated work on the first embankment raise of the tailings <br />disposal area. The conceptual design and stability analysis <br />were presented in the San Luis operating permit amendment. As <br />discussed in Section D.6 of the amendment, prior to <br />construction of the raise, geotechnical testing of th~ in-situ <br />tailings material was performed to verify the concept al <br />design. <br />Packages). <br />Steffen Robertson and Kirsten (U.S.), Inc. (SRK), the tailings <br />facility design engineers, have prepared the geotechnical <br />investigations, stability analysis, and final design 3teport <br />(Phase II, Raise 1 Design Report) and the technical <br />specifications report (Earthwork and Liner Installation <br />Three copies of the Design Report and three copies of the <br />technical specifications are being submitted to the Division <br />with this letter. <br />The information collected during the field investigations was <br />incorporated into the conceptual engineering design to refine <br />the original embankment model. Stability analyses of the <br />refined model confirms the conceptual raise design as <br />presented in the permit amendment. The embankment lift will <br />be constructed as designed and approved in the amendment. <br />The following is a brief construction schedule for the <br />embankment lift. The earthwork and liner installation <br />contracts will be awarded the week of July 12. Earthwork <br />contractor mobilization will begin the week of July 19. <br />A SUB.SlDlAFY OF BA1T/.F. MUUA7dlN PULP COMPANY <br />P.O. BOX 310 SAN LUIS, COLORADO RI IS?-0310 (719167_J363 FAX (719) 67?-3363 <br />