Laserfiche WebLink
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 />July 6, 1993 RFC~IVED <br />JUL 0 8 199 <br />iii iiiiiiiiiiiu iii <br />999 <br />C. E. Johnston Division ui Miner~lg g (;eoloyy <br />Division of Minerals & 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 second quarter 1993 bench stability survey was performed July <br />3, 1993. Vertical angles were measured with a 20 second theodolite <br />and elevations were calculated using predetermined horizontal <br />distances. A summary of this survey, the last two surveys and the <br />11-20-85 base line survey is as follows: <br /> 11-20-85 11-16-92 03-23-93 07-03-93 <br />S-1 6400.90 6400.59 6400.60 6400.63 <br />S-2 6396.06 6395.84 6395.87 6395.87 <br />S-3 6385.77 6385.50 6385.53 6385.60 <br />S-5 6479.92 6479.52 6479.53 6479.55 <br />S-6 6480.51 6479.78 6479.82 6479.82 <br />S-7 6479.31 6478.92 6478.92 6478.93 <br />S-8 6479.92 6479.48 6479.56 6479.53 <br />Let me know if there are any questions concerning this data. <br />Sincerely, <br />e.-~ <br />Jim Stover, P.E. <br />Chief Engineer <br />BENMON <br />