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REP07098
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REP07098
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Entry Properties
Last modified
8/24/2016 11:37:24 PM
Creation date
11/26/2007 11:31:39 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981047
IBM Index Class Name
Report
Doc Date
11/20/1992
Doc Name
QUARTERLY BENCH STABILITY MONITORING PN C-81-047
From
MINREC INC
To
MLRD
Permit Index Doc Type
STABILITY REPORT
Media Type
D
Archive
No
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MINREC, INC . III'IIIII~II~I~~ III <br />2768 COMPASS DRIVE, SUITE 101 999 <br />GRAND JUNCTION, COLORADO 81506 <br />PNONE: (303) 245-4101, FAR 242-7908 <br />BLUE RIBBON MINE <br />November 17, 1992 °!~ c <br />~<~ ~` ~.. <br />~OV 2 p ~gg2 <br />C. E. Johnston RALS&~,~~ <br />Mined Land Reclamation Division MINE ~„ <br />1313 Sherman St., Room 215 "FUr.;;, <br />Denver, Colorado 80203 <br />Re: Quarterly Bench Stabili.t3~ Monitoring; - - - -- <br />Permit No. C-81-047 <br />Dear Ms. Johnston: <br />The fourth quarter 1992 bench stability survey was performed <br />November 16, 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 06-13-92 09-26-92 11-16-92 <br />S-1 6400.90 6400.63 6400.62 6400.59 <br />S-2 6396.06 6395.89 6395.88 6395.84 <br />S-3 6385.77 6385.56 6385.58 6385.50 <br />S-5 6479.92 6479.57 6479.55 6479.52 <br />S-6 6480.51 6479.84 6479.82 6479.78 <br />S-7 6479.31 6478.99 6479.02 6478.92 <br />S-8 6479.92 6479.59 6479.57 6479.48 <br />Let me know if there are any questions concerning this data. <br />Sincerely, <br />Ji~~ P.E. <br />Chief Engineer <br />HENNON <br />
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