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West Elk Mine <br />Loadout Facility <br />MCC uses a pre- weigh, over - the -track type of loadout facility at West Elk Mine. In this <br />facility, a surge bin receives the coal from the loadout conveyor. The coal is then transferred <br />to a weigh bin. Finally, the weigh bin drops a measured amount of coal into a railroad car via <br />a chute. The capacity of this system is 6,000 tons per hour. Two, double - walled (self - <br />contained secondary containment) polyethylene tanks are located west of the loadout building <br />to contain antifreeze (diethylene glycol) for treatment of coal and railcars for winter shipment. <br />One 12 -foot diameter tank contains approximately 15,000 gallons of antifreeze to, spray on the <br />coal as it is loaded. Another 12 -foot diameter tank contains approximately 9,800 gallons of a <br />thicker antifreeze to treat the railcars prior to loading. A concrete clean -up bunker is located <br />to the east of the loadout building. The bunker is used to clean -up coal that occasionally spills <br />during the loading process. The spilled coal is loaded into a truck and hauled to the main mine <br />site. <br />(8) Coal Processing Waste and Non -Coal Processing Waste <br />Production of Waste 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, as well as low quality coal. <br />This low quality coal is at times not marketable and becomes reject coal requiring disposal. <br />Should a suitable market emerge at a later time, any accessible reject coal may be recovered <br />and used (or "recycled ") from the disposal area, processed and shipped as coal product. This <br />recycling maximizes the coal production from the mine while minimizing the amount of <br />material requiring permanent disposal and optimizing the life of the disposal areas. <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, razed mine and site development materials, sediment <br />pond dredgings, soils contaminated with non - hazardous materials (e.g. petroleum products) <br />and limited mine development or coal processing wastes from neighboring operations, if <br />comparable in characteristic to West Elk Mine's refuse. These additional sources make up a <br />very small percentage of the total amount of refuse produced 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 Bear No. 2 Mine portal bench, the Blue Ribbon Mine bench <br />stabilization and backfill, and West Elk Mine's portal bench mine supply storage area fill and <br />the run -of -mine stack tubes coal storage area fills. Coal refuse was once stockpiled in the <br />initial waste rock storage area (maintenance shop bench), but all refuse or waste was removed <br />before construction of the earthen fill to make a pad for the shop. Coal refuse is transported <br />2.05 -45 Rev. 11/04, 03/06, 04/06 & 05/06- PR10; 08109- TR118; 08109- TR119; 09109 - MR357, 01/10- TR120 <br />O <br />