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:." <br />Memo to Christine Johnston <br />MCC Upper Repuee Pile <br />page 4 <br />accommodations.. Could subsidence induced by the URP loading <br />or subsequent multiple-seam extraction possibly cause the pile <br />to settle differentially? If so, could subsidence disrupt the <br />integrity and continuity of the underdrains? What design <br />accommodations could be implemented to prevent offset of the <br />underdrains, if necessary? <br />cc: Dave Berry <br />Doc: M:/COAL/JAP/MTGlURP.PRE <br />JP/7P <br />