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MINREC, INC. <br />2768 COMPASS DRIVE, SUITE 101 <br />GRAND JUNCTION, COLORADO 81506 <br />PHONE: (303) 245-4101, FAR 242-7908 <br />BLUE RIBBON MINE <br />iiiiiiiiiiiiiiiiiii <br />R~CEI AEU <br />November 11, 1993 NO~YS 1993 <br />'~'~", . <br />C. E. Johnston `~ ~~'~:;,J,, <br />Division of Minerals b Geology <br />1313 Sherman St., Room 215 <br />Denver, Colorado 80203 <br />Re: Quarterly Bench Stability Monitoring; <br />Permit No. C-81-047 <br />Dear Ms. Johnston: <br />The fourth quarter 1993 bench stability survey was performed <br />November 10, 1993. Vertical angles were measured with a 20 second <br />theodolite and elevations were calculated using predetermined <br />horizontal distances. A summary of this survey, the last two <br />surveys and the 11-20-85 base line survey is as follows: <br /> 11-20-85 07-03-93 09-25-93 11-10-93 <br />S-1 6400.90 6400.63 6400.63 6400.60 <br />S-2 6396.06 6395.87 6395.86 6395.86 <br />S-3 6385.77 6385.60 6385.53 6385.56 <br />S-5 6479.92 6479.55 6479.53 6479.52 <br />S-6 6480.51 6479.82 6479.79 6479.79 <br />S-7 6479.31 6478.93 6478.94 6478.92 <br />S-8 6479.92 6479.53 6479.50 6479.47 <br />Let me know if there are any questions concerning this data. <br />Sincerely, <br />L--~1 <br />Jim Stover, P.E. <br />Chief Engineer <br />BENMON <br />