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<br />Bear Coal Company <br /> <br />13 December 6, 1994 <br />Relative movement between surveys is shown in the following <br />Tables. <br />Table 3 Subsidence Main Loop - Relative Movement <br />Period of September, 1994 to November, 1994 <br />Table 4 Subsidence Sideshots - Relative Movement <br />Period of September, 1994 to November, 1994 <br />Table 5 Slope Stability - Relative Movement <br />Period of September, 1994 to November, 1994 <br />Table 6 Subsidence - Lone Pine Gulch <br />Period of September, 1994 to November, 1994 <br />TABLE 3 -SUBSIDENCE <br />SUBSIDENCE POINT CHANGES MAIN LOOP - RELATIVE MOVEMENT <br />SEPTEMBER, 1994 TO NOVEMBER, 1994 <br />Point Horizontal Distance Bearing Elevation <br />No. <br />UT2 0.06 S24°30'E -0.23 <br />U4 0.08 506°O1'E -0.21 <br />U1 0.10 S03°21'E -0.22 <br />U3 0.12 S02o09'W -0.24 <br />U2 0.13 544°46'E -0.25 <br />U5 0.18 S29°46'W -0.20 <br />U9 0.12 S17o55'E -0.07 <br />UA1 0.07 S45°51'W -0.06 <br />US 0.13 S81o02'W No Change <br />The change in horizontal position can be attributed to a variety <br />of factors (1) the error of closure and adjustment inherent in <br />any survey; (2) actual movement of the monuments due to sub- <br />sidence. The error of closure for the November, 1994 traverse <br />was 0.56 feet of error in a total traverse distance of 18,209 <br />feet which reflects a closure-ratio of 1 part in 32,500. <br />The closures of our elevations using trigonometric leveling have <br />been very good. Errors ranging from 0.10 feet to no error. <br />