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TABLE 1 <br />Southfield Mine <br />SEMI-ANNUAL SUBSIDENCE MONITORING DATA SUMMARY <br />PERIOD: JANUARY 1 THROUGH JUNE 30, 1999 <br />FLORENCE WATER LINE <br />Original Survey Dates: 5/85, 10187, 1/95, 5/96 <br />Prevaus Survey Date: 3199 <br />Latest Survey Date: 7/99 <br />Change from Original Survey Change from Previous Survey <br />Monument Latest Survey Vertical Horizontal Previous Survey Vertical Horizontal <br />No. Elevation Ft Chan a Ft Cha a Ft Elevation Ft Cha a Ft Cha a Ft <br />B 6,431.65 -0.35 0.70 6,431.83 -0.18 0.20 <br />C.: 6,477.22: -0.91::.. .1:13 ; : 6;477.45: -0:23. 0.16..... <br />D 6,553.22 -1.25 0.51 6,553.58 -0.36 0.16 <br />E 6,631.09.: -2:54.. 1.28 6,6.3.1..41 -0.32 0.20.. <br />F 6,296.66 -2.24 0.48 6,296.82 -0.16 0.08 <br />G 6,26'1:37. -3.18... 0.56 6,261.48 -0.11 0:13. <br />H 6,238.87 -1.41 0.22 6,238.98 -0.11 0.09 <br />1 6:205.89 : -3.42.:: : 0.56" . 8,207.55 -1.66. 0.61':' <br />CV Joint 6,258.65 -2.94 0.13 6,258.71 -0.06 0:11 <br /> <br />THOMPSON RANCH STRUCTURES <br />Original Survey Dete: 5/85 <br />Previous Survey Date: 3/99 <br />Latest Survey Date: 7/99 <br />Change from Original Survey Change from Previous Survey <br />Latest Survey Vertical Horizontal Previous Survey Vertical Horizontal <br />Structure Elevation Ft Chan a Ft Chan a Ft Elevation Ft Cha a Ft Chan a Ft <br />N. House 6,366.78 -0.57 0.27 6,367.16 -0.38 0.06 <br />S. House 6,371.34 -0.60 0.25 6,371.73 -0.39 0.10 <br />Bam 6,362.84 -0.56 0.25 6,383.16 -0.32 0.16 <br /> <br />NEWLIN CREEK POINT <br />Original Survey Date: 5185, 12/96 <br />Previous Survey Dale: 3/99 <br />Latest Survey Date: 7199 <br />Change from Original Survey Change from Previous Survey <br />Latest Survey Vertical Horizontal Previous Survey Vertical Horizontal <br />Elevation Ft Cha a Ft Cha a Ft Elevation Ft Chan a Ft Cha a Ft <br />Point 6,221.19 -0.79 0.01 6,221.66 -0.47 0.08 <br />NOTE: NIA = No Data <br />