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III IIIIIIIIIIIIIIII <br />Richartl D. Lamm <br />Governor <br />DEPARTMENT OF NATURAL RESOURCES <br />David H. Getches, Executive Director <br />MINED LAND RECLAMATION DIVISION <br />DAVID C. SHELTON, Director <br />DATE: November 13, 1985 <br />T0: Susan Mowry <br />FROM: Jim Pendleton <br />RE: October, 1985 - B <br />( Permit ,E~81-~ <br />i\ <br />{> <br />ibbon Mine Bench Monitoring Report <br />I have reviewed the stability monument monitoring data submitted by Blue <br />Ribbon Coal Company. The report presents the results of the <br />September 17, 1985, survey of the eight stability monuments placed on the <br />reconstructed Blue Ribbon Mine Bench. The monuments have detected settlements <br />of between 0.5 feet and 0.17 feet since July 1, 1985. As such the monuments <br />appear to be documenting normal consolidation settlement of the engineered <br />mine bench fill. Continued monitoring should document cessation of <br />consolidation settlement with time. <br />• /ph <br />cc: Bob Liddle <br />Doc. No. 4892 <br />• <br />423 Centennial Building, 1313 Sherman Street Denver, Colorado 80203 Tel. (303) 866-3567 <br />