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TABLE OF CONTENTS <br />I. MINE DESCRIPTION .......................................................................................... ............................1 <br />I.A Underground Development .................................................................... ............................1 <br />I.A.1 Mine Openings ......................................................................... ............................2 <br />I.A.1.a Portal- D Seam ........................................................... ............................2 <br />I.A.1.b Portal- B Seam ........................................................... ............................2 <br />I.A.1.c Ventilation Entries- B Seam ....................................... ............................2 <br />I.A.2 Mining Systems ............................................................................. ............................2 <br />I.A.2.a Room and Pillar Mining .............................................. ............................2 <br />I.A.2.b Longwall Mining .......................................................... ............................3 <br />I.A.2.c Mining Method Decision ............................................. ............................5 <br />I.A.3 Mining Sequence .......................................................................... ............................5 <br />I.A.4 Mining Equipment ......................................................................... ............................6 <br />I.A.5 Mining Plan .................................................................................... ............................7 <br />I.A.6 Subsidence .................................................................................... ............................7 <br />I.A.6.a Subsidence Area Survey ............................................ ............................7 <br />I.A.6.b Subsidence Control .................................................... ............................8 <br />I.A.6.c Subsidence Prevention ............................................... ............................9 <br />I.A.6.d Damage Mitigation ....................................................... ........................ 10 <br />I.A.6.e General Subsidence Control ....................................... ........................11 <br />I.A.6.f Red Wash and Scullion Gulch ...................................... ........................ 11 <br />I.A.6.g SubsidenceEffects on the Powerline ......................... ........................ 12 <br />I.A.6.h Subsidence Monitoring Program ................................. ........................13 <br />I.A.7 Mine Ventilation .............................................................................. ........................ 13 <br />I.A.B Underground Transportation ......................................................... ........................15 <br />I.B Surface Support Facilities .............................................................................. ........................ 15 <br />I.B.1 Coal Handling and Storage ........................................................... ........................ 15 <br />I.B.2 Coal Preparation Plant ................................................................... ........................ 16 <br />I.B.3 Refuse Disposal ............................................................................. ........................16 <br />1.6.4 Temporary Coal Laydown Area .................................................... ........................ 17 <br />I.C. Auxiliary Facilities ........................................................................................... ........................ 17 <br />I.D Utilities ............................................................................................................ ........................18 <br />I.D.1 Electric Power Supply .................................................................... ........................18 <br />I.D.2 Water Supply .................................................................................. ........................18 <br />I.D.3 Sewage Treatment ........................................................................ ........................ 19 <br />I.D.4 Telecommunication ........................................................................ ........................ 19 <br />Rio Blanco Country Special Use Permit#81-1 <br />Exhibit B-Mining Plan <br />September2000 <br />