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• 2.05.6(6) <br /> <br />Subsidence Monitoring <br />Monument Location Frequency Purpose <br />17-A Hubbard Creek Quarterly <br />17-B Hubbard Creek Quarterly <br />17-C Hubbard Creek Quarterly <br />To confirm subsidence does not <br />17-D Hubbard Creek Quarterly occur in the limited extraction zone <br />17-E Hubbard Creek Quarterly along Hubbard Creek <br /> <br />17-F <br />Hubbard Creek <br />Quarterly . <br />17-G Future Quarterly <br />17-H Future Quarterly <br /> <br />24-D Quarterly <br />24-E Monuments are Quarterly <br />24-F located above Quarterly <br />24-G the west D-Seam Quarterly <br />25-A and west B- Quarterly To determine subsidence over <br />25-B Seam panels. Quarterly multiple seam mining. The <br />25-C The D-Seam Quarterly subsidence monuments will have <br />25-D panels were Quarterly pre-longwall mining base line <br />25-E numbered WD-1, Quarterly measurements, post D Seam <br />25-F WD-2 & WD-3 Quarterly longwall mining measurements and <br />26-A and were mined Quarterly post B Seam longwall mining <br />26-B from 3/04 to Quarterly measurements. <br />26-C 3/05. The B- Quarterly <br />26-D Seam panels Quarterly Monitoring of these 20 monuments <br />26-E were numbered Quarterly will cease October-2008. <br />26-F B-1, B-2 & B-3 Quarterly <br />26-G and were mined Quarterly <br />27-A from 4/05 to Quarterly <br />27-B 10/06. Quarterly <br />27-C Quarterly <br />• 'Seasonal access difficulties usually restrict quarter monitoring to three times per year. <br />PR-11 <br />2.05 - 125 - <br />11 /08 <br />~ PPRov~p <br />I z,~ ~q/a S <br />