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1AOUntain Coal Company <br />West E!k Mine <br />Post Office Bax 591 <br />Somerset. Colorado Bt434 <br />Tnln~4.e..~']I~'I 070 SI1~S <br />June 3, 1993 <br />III IIIIIIIIIIIII III <br />~,(_ <br />':~C~ . __ .. .. . <br />sup 7 assn <br />Stly y~ <br />/\ <br />\/ <br />Ms. Christine E. Johnston ,. , ..,~. , ~. ,;eolcy} <br />Colorado Division of Minerals and Geology <br />Office of Mined Land Reclamation <br />1313 Sherman Street, Room 215 <br />Denver. CO 80203 <br />Re: West Elk Mine, Permit No. C-80-007, Request for Extension of Field Minor <br />Revision No. 87 <br />Dear Christine: <br />Mountain Coal Company (MCC) requests an extension from May 14, 1993 to June 16, <br />1993, to submit a minor revision application to provide supporting information for field <br />minor revision No. 87. MCC's consultant, Envirocon, Inc., received the final 28~ay <br />laboratory break data on the roller compacted concrete buttress just yesterday. The last <br />stability analysis run is presently being completed utilizing this data. The minor <br />revision application will include the complete stability analysis by Envirocon, Inc. and <br />reclamation bond calculations. <br />Please don't hesitate to contact me should you have questions. <br />Sincerely, <br />~ d Gv~~' <br />ku~ ~,~ <br />ICatlileen G. Welt <br />Environmental Supervisor <br />~~~1-u~Q~~ Vbik~`(~ <br />AMCp62fM <br />