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Bear Coal Company <br /> <br />13 OctobeY 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 July, 1994 to September, 1994 <br />Table 4 Subsidence Sideshots - Relative Movement <br />Period of July, 1994 to September, 1994 <br />Table 5 Slope Stability - Relative Movement <br />Period of July, 1994 to September, 1994 <br />TABLE 3 - SUBSIDEIJCE <br />SUBSIDENCE POINT CHANGES MAZN LOOP - RELATIVE MOVEMENT <br />JULY, 1994 TO SEPTEMBER, 1994 <br />Point Horizontal Distance Bearing Elevation <br />No. <br />UT2 0.10 S64°17`W -0.02 <br />U4 0.10 S66°43'W -0.05 <br />U1 0.08 S56o32'W +0.05 <br />U3 0.03 S88°19'W +0.05 <br />U2 0.09 S73°06'W +0.08 <br />U5 0.01 N17°44'W -0.01 <br />U9 0.08 N87°48'W -0.03 <br />UA1 0.13 S63°24'W -0.03 <br />U8 0.11 S66°12'E -0.04 <br />The change in horizontal position can be attributed to a variety <br />of factors (i) 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 September, 1994 traverse <br />was 0.32 feet of error in a total traverse distance of 18,209 <br />feet which reflects a closure ratio of 1 part in 57,100. <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-SIIBSiDEI~ICE <br />SUBSIDENCE POINT CHANGES - SIDESHOTS - RELATIVE MOVEMENT <br />MAY, 1994 TO JULY, 1994 <br />Point Horizontal Distance Bearing Elevation <br />No. <br />U10 0.15 N61°42'W +0.14 <br />U11 0.18 N51°51'W -0.05 <br />