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SubsWence Field Observations <br />Wesl Elk Mine <br />August 27-29. 2002 <br />J.~: <br />1 <br />~; <br />y,`~ - - w <br />:-~ ~~: ~. <br />.''. -., ~ <br />A`. <br />-~ •b-4 <br />~ 5.Y1 <br />_r ~ ~ _ F <br />•Y~a <br />~~ !, ~~ <br />~ r,c:uir,n I~ <br />Figure 16. Subsidence cracks located above mined longwall Panel <br />13-A. <br />tiuhsidcncc cracks ahucc mined longwall Panel 13 have alnw;t completely healed and Kaled. <br />• Pmjectcd overburden thickness to the R-tieam is I .I III ft. <br />• the cracks in Triable sandstotx Ixdr<xk above the midlx~int of mincJ longwall Puncl I i <br />(LtKation 7 0l-August ?9, ?Onl) arc completely healed, with the exception of one smal I crack <br />I Figure 171, and this crack is nearly healed. <br />• C'omparr Figure I7 of this mpon with this same crack in higurc S of the Octotx.r 7, 1990 <br />report, when it was rc~eently tbrmed in the dynamic subsidence cone ahoy-e the active <br />longwall mining lace. <br />637-032 5.0 Wnght Water Engineers, inc Page 2t <br />DCCRmber "1002 <br />