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2.05.3 <br />PR -12 <br />A PAP, aV e <br />11/1 cltb <br />Five rock entries were driven in the B -East mains to cross the fault in the B - <br />Seam. The entries were be supported as necessary to assure safety of the <br />miners and to assure any debris within the fault plane is supported in place <br />and not allowed to cave or flow into the mine. <br />Mining advanced through the fault in the D -Seam and longwall panels WD1, <br />WD2 and WD3 were mined with no significant problems. Longwall mining <br />faces will be developed about 850 feet wide and will vary in length from 2800 <br />to 6200 feet. Gates entries will typically be developed with three entries with <br />pillar spacing and size designed to provide maximum support for ventilation <br />and belt haulage. Bleeder entries will be developed with four or more <br />entries. <br />The new unit train loadout is located south of the UPRR mainline. The <br />Terror Creek Loadout and its associated activities are located north of the <br />UPRR mainline. Therefore, the Operator and the Terror Creek Loadout will <br />not have overlapping permit areas. <br />Mining is currently ongoing in the B -Seam. Mining in Panels B-8 and B-9 is <br />complete. Mining in the B-8 and B-9 panels encountered higher than normal <br />methane concentrations. The Operator had difficultly dealing with the <br />methane in the sealed areas and in the longwall gob areas. Beginning late in <br />2009, nitrogen was generated on the surface a piped down the Hubbard <br />Creek Shaft through the D -Seam dewatering pipeline. Nitrogen was piped to <br />and injected into problem areas in order to dilute methane concentrations. <br />The nitrogen generator ran intermittently as required to supply necessary <br />nitrogen to the mine. <br />The extent of mining in the B-8 and B-9 panels was substantially reduced <br />because of adverse mining conditions. Panels B-10 and B-11 will not be <br />developed in the eastern mining district. Reduced coal recovery in northeast <br />mining district results in all resources being moved to the remaining coal <br />reserves located to the west. The west reserves are located west of Terror <br />Creek and were previously defined as the Bowie No. 1 mine east thick coal <br />pod. These reserves were not mined from the Bowie No. 1 mine because of <br />the June 1986 mine fire. <br />2.05-7- 11/11/10 <br />