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Bowie No. 1 Mine Subsidence <br />The following table shows the relative change in each subsidence station, <br />• <br />For the values based on the GPS Survey. <br />From the August 2002 GPS Survey to the December 2002 Survey. <br />Station Bearing Distance Elevation <br />Sta B N 18 41' E 0.07 - 0.02 <br />Sta C N 59 19' E 0.07 + 0.04 <br />Sta E S 02 1T W 0.05 - 0.12 <br />PL-1 N 58 34' W 0.06 - 0.05 <br />PL-2 N 90 00' W 0.03 - 0.06 <br />PL-3 N 31~ 36' W 0.02 0.00 <br />PL-4 N 89 19' E 0.08 + 0.02 <br />PL-5 N 76 38' E 0.12 - 0.05 <br />PL-6 N 56 58' E 0.02 + 0.03 <br />PL-7 S 49 14' W 0.04 - 0.05 <br />Sta 6 N 7g 08' E 0.03 - 0.06 <br />Sta 14 N 35 42' E 0.13 - 0.01 <br />Sta 15 S 21 ~ 19' E 0.04 - 0.04 <br />Sta 16 S 09 10' E 0.06 - 0.05 <br />Changes in the coordinate values from survey to survey may Ge due to: <br />- Actual changes due to subsidence activity. <br />- Random errors inherent to arty field survey. <br />If you have any questions please call <br />s~~~~c~1 <br />Stephen B. Cragg <br />_~ <br />15 <br />