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<br />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 />I~~ I~III~~~~IIIII~I <br />RE~~~V <br />APR ~~ <br />Re Mip 81882 <br />April 3, 1992 ~/$mati~~0d <br />C. E. Johnston <br />Mined Land Reclamation Division <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 first quarter 1992 bench stability survey was performed <br />April 1, 1992. 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 09-16-91 11-14-91 04-01-92 <br />S-1 6400.90 6400.64 6400.62 6400.61 <br />S-2 6396.06 6395.89 6395.89 6395.89 <br />S-3 6385.77 6385.57 6385.53 6385.54 <br />S-5 6479.92 6479.57 6479.55 6479.52 <br />S-6 6480.51 6479.84 6479.79 6479.83 <br />S-7 6479.31 6479.02 6479.01 6478.95 <br />S-8 6479.92 6479.56 6479.49 6479.67 <br />Let me know if there are any questions concerning this data. <br />Sincerely, <br />.wl ~~~ <br />Jim Stover, P.E. <br />Chief Engineer <br />BENMON <br />