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West Elk Mine <br />EXHIBIT 80 - -TABLE OF CONTENTS <br />Thermal Event. MDW. Geotechnical Borehole. and Miscellaneous <br />Approved Revision (MR/TR/PR) Documents <br />Revision # Revision Title Approval Date <br />MR270 Thermal Event Activities ............................................................ ............................... 07/2001 <br />MR273 Drilling of Gob Vent Degas Borehole ............ ............................... ........................ 04 /2001 <br />MR274 Water System for Gob Vent Holes ........................................... ............................... 04/2001 <br />MR278 Access Two Additional Drill Pads ........................................... ............................... 08/2001 <br />MR279 Drill Two Additional Methane Vent Holes ........................... ............................... 07/2001 <br />MR281 'Exploration Drill Hole EEE ....................................................... ............................... 08/2001 <br />MR283 Two Additional Gob Vent Boreholes, 15-08 & 15 -09 ...... ............................... 09/2001 <br />MR285 Compilation of Recent Drilling Data ...................................... ............................... 03/2002 <br />MR287 Install up to 5 Degas Wells Panels 16 & 17 .......................... ............................... 10/2002 <br />MR290 Submittal of Drill Hole Abandonment Reports for Degas Project .......... 12/2002 <br />MR295 2003 Annual Operating Plan ...................................................... ............................... 06/2003 <br />MR298 Monitoring Well 03 -11 -1E Construction and Installation ............................ 09/2003 <br />MR300Abandonment As -builts ............................................................... ............................... 11/2003 <br />MR302 2004 Annual Operating Plan ..................................................... ............................... 05/2004 <br />MR306 2005 Annual Operating Plan ..................................................... ............................... 04/2005 <br />MR307 Two Methane Drainage Wells (MDW) in Sylvester Gulch .......................... 05/2005 <br />MR308 Install One MDW on Existing Pad .......................................... ............................... 05/2005 <br />NM09 Install MDW 24-05B ..................................................................... ............................... 06/2005 <br />MR313 Methane Drainage Wells Data Compilation ....................... ............................... 08/2005 <br />MR316 Addition of 3 Drainage Wells to 2005 AOP ......................... ............................... 08/2005 <br />i Rev. 05109 -TR117 <br />