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EMD (Panels 2 -Right through 6- Right, PR97 -04) <br />During the 1993 -1998 five -year permit term, mining continued in the EMD. Initial development of gateroads in the <br />EMD encountered a previously unidentified fault. Conditions associated with this fault required TCC to redesign the <br />submains and mains; with their new locations as shown on Map 23. Development mining occurred in Gateroads 2- <br />Right through 4 -Right in the EMD. Longwall mining occurred in Panels 6 -Right through 2 -Right in the remainder of <br />the EMD. These mining areas are shown on Map 23. <br />Longwall Panels 6 -Right through 2 -Right involved mining of coal contained in Federal leases COC- 54608, C- 081330, <br />and D- 052543, and fee coal owned by TCC. Development of Gateroads 4 -Right through 2 -Right involved mining coal <br />from Federal lease COC- 54608, and fee coal owned by Twentymile. Development of the Northeast Submains involved <br />mining of coal from Federal leases C- 081330 and COC- 54608. <br />NORTHERN MINING DISTRICT <br />NMD (Panel 12 -Right through 16- Right, PR99 -05) <br />During the 1998 -2003 five -year permit, mining continued in the EMD (as approved in Permit Revision PR97 -04) and <br />progressed into the NMD. Development mining continued in Gateroad 11 -Right through 18- Right, the Northeast and <br />Northwest Mains, and Longwall Panels 12 -Right through 16- Right. The mining area is shown on Map 23. <br />Mining of Longwall Panels 12 -Right through 16 -Right involve mining of coal from Federal lease COC- 54608, State <br />lease CO -3229, and fee coal owned by TCC. Gateroads 11 -Right through 18 -Right involved mining coal from the <br />same leases as described for the longwall panels. In the Northeast Mains, in addition to Federal lease COC- 54608, and <br />State lease CO -3229, coal was mined from the Myron Walker Trust lease. <br />NMD (Panel 17 -Right through 21- Right, PR03 -06) <br />During 2003 -2008, mining will continue in the NMD. Development mining will continue in Gateroads 18 -Right <br />through 24- Right, the bleeders, the Northwest Mains, and Longwall Panels 17 -Right through 22 -Right (partial). The <br />mining area is shown on Map 23. <br />Mining of Longwall Panels 17 -Right through 22 -Right will involve mining of coal from State lease CO -3229 and fee <br />coal owned by TCC. Gateroads 18 -Right through 24 -Right and the associated bleeders will involve mining coal from <br />the same leases as described for the longwall panels. The Northwest Mains will mine coal from State lease CO -3229. <br />NMD (Panel 21 -Right through 24 -Right (partial), PR06 -07, TR07 -63) <br />During 2006 -2008, mining will continue in the NMD. Development mining will continue in Gateroads 21 -Right <br />through 24- Right, the bleeders, the Northwest Mains, and Longwall Panels 21 -Right through 24 -Right (partial). The <br />mining area is shown on Map 23. Alignment of development entries may be adjusted, as necessary, to address <br />geologic conditions. <br />Mining of Longwall Panels 21 -Right through 24 -Right will involve mining of coal from federal lease COC -20900 (as <br />modified June 22, 2007), State lease CO -3229, fee coal owned by TCC, and to be obtained by TCC (federal lease sale <br />scheduled for October 6, 2006). Gateroads 18 -Right through 24 -Right and the associated bleeders will involve mining <br />coal from the same leases as described for the longwall panels. The Northwest Mains will mine coal from State lease <br />CO -3229 and fee coal owned by TCC. <br />TR08 -64 2.05 -7.1 06/17/08 <br />