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N111m] <br />Mine Dewatering Pipe <br />A 6 to 8 -inch diameter PVC pipe that originates at the B -Seam portal bench <br />and terminates at Outfall 006. Outfall 006 is located northeast of the unit <br />train loadout structure. Map 41 shows the route of the mine dewatering <br />pipeline. <br />Coal Storage Piles <br />Coal is stored in one of two open stockpiles at the D -Seam portal level. The <br />coal storage piles are; 1) run -of -mine and 2) stoker coal. Up to 100,000 tons <br />will be stored in the piles at any one time. A stacking tube is used to transfer <br />the coal into the run -of -mine coal stockpile in order to minimize segregation <br />and air particulate emissions. A radial stacker is utilized to stockpile the <br />stoker coal. The downhill conveyor transports crushed coal to the coal <br />storage pile located along Bowie Road. Up to 350,000 tons of coal will be <br />stored in the highway stockpile. <br />Downhill Conveyor Transfer Building <br />The downhill conveyor transfer building is a structural steel building where <br />the transfer belt from the crushing and screening building terminates. The <br />coal transfers to the downhill conveyor. The dimensions of the building are <br />approximately 16 feet by 16 feet by 25 feet high. <br />Stacking Tubes <br />The 2"XO" coal is stacked at the highway stockpile by three concrete tubes to <br />minimize coal segregation and air particulate emissions. One tube is <br />approximately 100 feet high, one is 120 feet high and the third is 130 feet <br />high. They are 12 feet in diameter and are equipped with 4 foot square <br />openings to allow coal to flow from the tube to the stockpile area. One of the <br />stacking tubes is located directly on the reclaim tunnel. <br />Reclaim Tunnels <br />Two 13 foot diameter, 350 -foot long and 200 feet long, multi -plate tunnels <br />are located at the highway stockpile. One feeds the unit train loadout and <br />the other feeds the wash plant. Two 42 -inch diameter, 160 foot and 150 foot <br />long escape tubes provide ventilation and emergency exit from the west <br />(closed) end of the reclaim tunnels. Both escape tubes terminate at a <br />concrete fan housing that is approximately 6 -feet by 6 -feet by 8 -feet high. <br />MR -130 2.05-18- 06/18/12 <br />