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Bowie No. 1 Mine Subsidence <br />Survey date June, 2003 <br />The following table shows the relative change in each subsidence station, <br />~ For the values based on the GPS Survey. <br /> From December 2002 to the June 2003 GPS Survey. <br /> Station Bearing Distance Elevation <br /> Sta B South 0.08 -0.03 <br /> Sta C S 06 39' W 0.12 +0.05 <br /> Sta E N 58 24' E 0.03 +0.02 <br /> PL-1 S 44 14' E 0.11 +0.10 <br /> PL-2 N 10 18' E 0.06 0.00 <br /> PL-3 N 33 41' E 0.05 +0.07 <br /> PL~I N 50 29' W 0.05. -0.01 <br /> PL-5 S 64 55' W 0.05 +0.10 <br /> PL-0 N 47 03' W 0.04 -0.07 <br /> PL-7 S 82 52' E 0.01 +0.10 <br /> Sta 6 S 43 2T E 0.05 +0.14 <br /> Sta 14 S 57 28' W 0.07 +0.08 <br /> Sta 15 S 43 19' W 0.05 +0.16 <br />• Sta 16 S 20 13' E 0.02 +0.13 <br /> The following table shows the relative change in each subsidence station, <br /> For the values based on the GPS Survey. <br /> From August 2002 to the June 2003 GPS Survey. <br /> DH-55 S 31~ 30' W 0.07 +0.03 <br /> DH-05 N 70 57' W 0.07 -0.04 <br /> DH-66 S 23 45' W 0.08 -0.12 <br /> DH-68 S 79 05' W 0.08 +0.10 <br /> STA-95 N 26 55' W 0.07 +0.04 <br /> STA-99 S 14 19' W 0.05 -0.04 <br /> STA-81 S ~ 48~ yy 0.07 -0.04 <br /> STA-82 S 42 16' E 0.03 -0.01 <br /> STA-83 N 65 03' W 0.05 -0.22 <br /> Changes in the coordinate values from survey to survey may be due to: <br /> - Actual changes due to subsidence activity. <br /> - Random errors inherent to any field survey. <br /> If you have any quest <br />ons please call <br /> S ~-.pkg..,. 3 ~ <br />i <br /> <br />Stephen B. Cragg <br />1 <br />• <br /> S1-23 <br />