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West Elk Mine <br />coal storage capacity. The silos were designed to reduce the hazard of spontaneous combustion <br />by minimizing dead storage areas within the silo compartments. <br />Crushed coal Stacktube and Underground Reclaim <br />A 48-inch width conveyor belt will transport crushed coal from the top of Silo No. 2 to the stack- <br />tube. This stack-tube will be approximately 106 feet in height and will be constructed similarly <br />to the run-of--mine coal stack-tubes. The transfer structure on the top and the reclaim tunnel and <br />conveyor belt underneath the area will also be similar in construction to the run-of--mine coal <br />stack-tube facilities. A dozer trap and reclaim system to be located just west of the silos will <br />similarly be constructed, as well. <br />Loadout Facility <br />MCC uses apre-weigh, over-the-track type of loadout facility at West Elk Mine. In this facility, <br />a surge bin receives the coal from the loadout conveyor. The coal is then transferred to a weigh <br />bin. Finally, the weigh bin drops a measured amount of coal into a railroad car via a chute. The <br />capacity of this system is 6,000 tons per hour. Two, double-walled (self-contained secondary <br />containment) polyethylene tanks aze located west of the loadout building to contain antifreeze <br />(diethylene glycol) for treatment of coal and railcars for winter shipment. One 12-foot diameter <br />tank contains approximately 15,000 gallons of antifreeze to spray on the coal as it is loaded. <br />Another 12-foot diameter tank contains approximately 9,800 gallons of a thicker antifreeze to <br />treat the railcars prior to loading. A concrete clean-up bunker is located to the east of the loadout <br />building. The bunker is used to clean-up coal that occasionally spills during the loading process. <br />The spilled coal is loaded into a truck and hauled to the main mine site. <br />{8)Coal Processin¢ Waste and Non-Coal Processing Waste <br />Production of 13'aste or Refuse Material <br />MCC generates waste or refuse during underground construction activities and mining. <br />Underground construction activities include building ventilation overcasts or undercasts, <br />ventilation shafts or tunnels, access slopes, and roadways or haulage ways, Mining produces <br />refuse material from the roof and floor surrounding the coal seam. <br />Although underground construction activities and mining constitute the primary sources of <br />refuse material, some refuse is generated from other mine activities. Other sources of refuse <br />material are contaminated coal spillage, sediment pond dredgings, soils contaminated with non- <br />hazardous materials (e.g. petroleum products) and limited mine development or coal processing <br />wastes from neighboring operations, if comparable in characteristic to West Elk Mine's refuse. <br />These additional sources make up a very small percentage of the total amount of refuse produced <br />at West Elk Mine. <br />Refuse Disposal <br />• During the operational life of the mine to date, refuse has been disposed of in several permitted <br />locations. They include the Beaz No. 2 Mine portal bench, the Blue Ribbon Mine bench <br />10541 Revised November 2004 PRf0; Rev. hfarch 2006; Rev. Apri12006 PRf0; Rev. May 1006PRf0 <br />