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IIIIIIIIIIIIIIIIIII ~~ <br />blue <br />~~on <br />company <br />April 17, 1986 <br />blue ribbon coal company <br />p.o. box 1352 <br />palisade, Colorado 81526 <br />(303) 464-7951 <br />~~~~O~~I~~- <br />ASR 2 ~ 1986 <br />Ms. Susan Mowry MINED LAND AEC~idiATiCl~l <br />Reclamation Specialist COIO.Dept.01k3!t'f31R~6tfCr3', <br />Colorado Mined Land Reclamation Division <br />423 Centennial Building <br />1313 Sherman Street <br />Denver, Colorado 80203-2273 <br />Subject: Quarterly Bench Stability Monitoring - File #C-047-81 <br />Dear Susan: <br />The following is the results of bench stability monitoring the the last month <br />in 1985 and the first quarter in 1986: <br /> 12/23/85 1/29/86 2/28/86 3/27/86 <br />S-1 6400.46 6400.58 6400.62 6400.61 <br />S-2 6395.55 6395.66 6395.77 6395.71 <br />S-3 6385.45 6385.43 6385.42 6385.42 <br />S-4 6383.03 6383.02 6383.09 6383.05 <br />S-5 6479.73 6379.65 6379.63 6379.61 <br />S-6 6480.07 6379.98 6379.98 6319.98 <br />S-7 6479.80 6479.64 6379.74 6479.72 <br />S-8 6479.92 6479.71 6479.90 6479.89 <br />These elevations were shot with a level using the same base points noted <br />for the last quarter of 1985, report date January 13, 1986. Visually no <br />stability problems were noted on this bench. In general the Hubbard Creek <br />valley experienced considerable movement during this quarter including the <br />mine access roads. <br />If there are any questions about this information, let me know. <br />Sincerely, <br />Larry ~ Reschke, P.E. <br />Project Engineer <br />LMR:tgn <br />xc: Jim Stover <br />