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?. 3 .x ...... _.....rr .-.-. ?. rrfF i...L._._.., .:._... .,-..r.-,... .....:._:. _ ? -?:f.-,' =,.er x{.:. -rr:::?„; ?,d-'_ _ •::?: <br />________.__. _._.. ................. ... .. ....... _. _. .rfrr_rrrr r?,?rrs?{fr1'-;.••srr va??„?:'g'.:ir:{-?.?( T'+• ' <br />C? ?$ O b d 7 <br />Reydor <br />566 mfc /??ort?for??j <br />Cd?,,1u?? R74" <br />FINAL REPORT <br />NORTH FORK VALLEY SEISMIC NETWORK <br />MONITORING REPORT <br />MOUNTAIN COAL COMPANY <br />WEST ELK MINE <br />SOMERSET, COLORADO <br />30 January 2008 <br />Prepared by <br />Ivan Wong, Jacqueline Bott, and Fabia Terra <br />Um <br />Seismic Hazards Group <br />URS Corporation <br />1333 Broadway, Suite 800 <br />Oakland, CA 94612 <br />THIRD QUARTER <br />2007