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..iii iiiiiiiiuiii iii <br />999 <br />Mountain Coal Company <br />Wesf Elk Mine <br />Post pllice Box 591 <br />Somerset, Colorado Bt 434 <br />Telephone 303 9235015 <br />January 11, 1993 <br />RECE4~~~ <br />Ms. Christine E. Johnston JpN 191993 <br />Colorado Division of Minerals & Geology <br />Office of Mined Land Reclamation p1Vi~ `.%'~ <br />1313 Sherman St., Room 215 MINERr1LS ~ ''~` ` '- <br />Denver, CO 80203 <br />Dear Christine: <br />i~ <br />Enclosed you will find West Elk Mine's (WEMs) subsidence data and <br />calculations. <br />Please note that there are two separate reports. The first report represents [he <br />F-Seam data from April 1985 through October 1992. The second report <br />covers surveys from October 1991 through October 1992 and represents B- <br />Seam subsidence monitoring. <br />If you have any questions, please feel free to contact me. <br />Sincerely, <br /> <br />Bonita K. Short <br />Environmental Coordinator <br />Enclosure(s) <br />xc: K.G. Welt w/o enclosure(s) <br />BKB/mcr <br />AMCG6iW <br />