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Bear Coal Company <br />• Table 5 Slope Stability - Relative Movement <br />Period of May, 1994 to July, 1994 <br />TABLE 3 -SUBSIDENCE <br />SUBSIDENCE POINT CHANGES MAIN LOOP - RELATIVE MOVEMENT <br />MAY, 1994 TO JULY, 1994 <br />Point Horizontal Distance Bearing Elevation <br />No. <br />UT2 0.44 N86°09'W -0.08 <br />U4 0.25 N76°56'W -0.03 <br />U1 0.25 N73°53'W +0.04 <br />U3 0.18 N74°51'W +0.03 <br />U2 0.16 N69o26'W +0.01 <br />U5 0.22 S83°09'W +0.05 <br />U9 0.16 S87°08'W +0.05 <br />UA1 0.18 S87°15'W +0.02 <br />U8 0.11 N55°27'W +0.04 <br /> <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 July, 1994 traverse was <br />0.28 feet of error in a total traverse distance of 18,209 feet <br />which reflects a closure ratio of 1 part in 64,800. <br />The closures of our elevations using trigonometric leveling have <br />been very good. Errors ranging from 0.10 feet to no error. <br />13 <br />July 27, 1999 <br />TABLE 4-SUBSIDENCE <br />SUBSIDENCE POINT CHANGES - SIDESHOTS - RELATIVE MOVEMENT <br />MAY, 1994 TO JULY, 1994 <br />Point Horizontal Distance Bearing Elevation <br />No. <br />U10 <br />U11 <br />U21 <br />0.01 S45°00'W <br />0.23 N85°43'W <br />0.25 580o55'E <br />-0.10 <br />+0.03 <br />-0.04 <br />J <br />