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MINREC , INC III IIIIIIIIIII <br />743 HG12I2ON (X1lJRT, SUITE 205 _ sss <br />TELE~PR~ON~03) 24514101~~~~~~~~ <br />BLUE RIBBON MINE JUL 1 1991 <br />Vined Lana <br />Reclamation Division <br />June 27, 1991 <br />R. P. Price <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 Mr. Price: <br />The second quarter 1991 bench stability survey was performed <br />June 26, 1991. 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 11-16-90 09-04-91 06-06-91 <br />S-1 6400.90 6400.62 6400.64 6400.66 <br />S-2 6396.06 6395.87 6395.86 6395.89 <br />S-3 6385.77 6385.55 6385.58 6385.59 <br />S-5 6479.92 6479.53 6479.53 6979.58 <br />S-6 6480.51 6479.85 6479.83 6479.85 <br />S-7 6479.31 6479.04 6479.02 6479.02 <br />S-8 6479.92 6479.53 6479.55 6479.53 <br />Let me know if there are any questions concerning this data. <br />Sincerely, <br />Jim Stover, P.E. <br />Chief Engineer <br />BENMON <br />