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0 <br />3. Based upon the estimated Y2 seam outcrop elevations (Fig. 1), the <br />seam will not be below elevation 6990 in the West Pit and sealing of <br />coal seams will not be required. <br />If we can be of further service, please call. <br />Very truly yours, <br />CTUTHOMPSON, INC. <br />Mark G. Gray, P. E. <br />Project Manager <br />Reviewed by <br />Ronald M. McOmber, P. E. <br />Principal <br />MGG:RMM:mgg/sdc <br />(5 copies sent) <br />COLOWYO COAL COMPANY L P. <br />OTL? 27,001 5 <br />