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August 19, 2013 <br />Mr. Zach Trujillo <br />Division of Reclamation, Mining and Safety <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />RE: Minor Revision #156 — N2 /monitoring, Degas, and Development/Exploration <br />Holes <br />Dear Zach: <br />Enclosed is a revised minor revision (MR -156) requesting the addition 5 degas boreholes, <br />5 nitrogen injection/monitoring holes, and 4 development/exploration drill holes with <br />associated roads and NZ pipeline extension. This revision removes the return shaft <br />previously proposed and adds the development/exploration drill holes. <br />To simplify the process the attached MR application is complete with no need to <br />incorporate pages from the prior submittal. <br />The return shaft RS 11 L will be resubmitted as a Technical Revision. <br />The disturbance details needed for bond calculations are included in an attached table. <br />If you have any further questions please contact me at 970 - 675 -4322. <br />Sincerely, <br />Scott Wanstedt <br />Environmental Engineer <br />swanstedt(.deserado.com <br />enc: <br />cc: Jeff Dubbert <br />Paul Daggett - BLM <br />