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- Mined Land Reclamation <br />12 October 13, 1992 <br />closure for the July, 1992 traverse was 0.27 feet of error in a <br />~ total traverse distance of 18,207 feet which reflects a closure <br />ratio of 1 part in 68,300. <br />The elevations show a change that reflects an decrease in value <br />of 0.05 feet on the average. Elevations are obtained by <br />trigonometry. <br />The closures of our elevations using trigonometric leveling have <br />been very good. Errors ranging from 0.10 feet to no error. <br />TABLE 4-SLOPE STABILi'Cl' <br /> RELATIVE MOVEMENT <br /> NOVEMBER, 1991 TO JULY, 1992 <br />Point Horizontal Distance Bearing Elevation <br />No. <br />U16 0.13 N31°93'W -0.02 <br />U17 0.13 N10°13'E -0.01 <br />U18 0.11 N18°41'E +0.01 <br />U19 0.10 NOS°12'E +0.03 <br />U23 0.09 N02°16'W No Change <br />If you have any questions, please call. <br />~~ <br />E. LeRoy Black <br />ELB:lml D:HD:BearCoal <br />BearMLR1.092 <br />Enclosure <br />Copy to: Bear Coal Company <br />ATTENTION: Dave Hurr <br />i <br />