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• The stockpiled coal sits over the reclaim tunnel and typically is fed by gravity to the overland belt by vibratory <br />feeders. However, as the stockpile increases in size the coal is dozed into the live cone area of the stockpile and <br />then it is gravity fed to the feeders. <br />The construction of the reclaim tunnel and laterals required excavating trenches and then constructing the tunnel <br />within the trenches. The tunnel and laterals are constructed out of concrete or steel. An exhaust/escape tunnel <br />extends from the reclaim tunnel. The excavated dirt was used in constructing the stockpile base. A concrete wall <br />was constructed where the overland belt exits the reclaim tunnel. <br />Review of coal handling systems and operations has resulted in recognition of the need for increased coal stockpile <br />capacity. In order to provide the required additional capacity, the existing coal stockpile area was expanded to the north <br />and west. Expansion required relocation and reconstruction of Pond E and the associated ditches, elimination of the <br />segment of haul road which traverses the north edge of the current stockpile area, and limited backfilling and grading <br />work to establish the expanded stockpile area. <br />Grading activities for the stockpile expansion were completed in conjunction with site preparation and grading <br />operations for the preparation plant site. The stockpile expansion area is shown on Map 24 and required expansion <br />activities are described under the appropriate section for each of the effected facilities. The stockpile expansion added <br />approximately 100,000 tons of coal stockpile capacity, increasing total capacity for the main stockpile area to <br />approximately 600,000 tons. <br />Twentymile Coal Company constructed a preparation plant building, thickener tank and refuse bin as part of the <br />overall preparation plant facility. The preparation plant building, thickener tank, and refuse bin are located to the <br />west of the existing R-O-M coal stockpile. These three structures are located within the disturbed area and drainage <br />from the area passes through the existing sediment control system. <br />The structures are of steel construction, and typical construction techniques were used to complete the installation <br />of the structures. Typically this included use of a crane or boom truck to set structure and metal fabricating <br />equipment for construction of structure. The approximate dimensions of the structures are as follows: <br />Preparation Plant Building - 48' x 54' x 76' <br />Thickener Tank - 35' diameter x 18' deep <br />Refuse Bin - 20' x 54' x 76' <br />A control building (MCC-1) is constructed adjacent to the exhaust fan. This building houses the instrumentation <br />necessary for the reclaim system. The building is approximately 8' X 10' X 10' and is constructed on a 6 inch <br />concrete pad and 4' X 10' stem wall. The location of the building is shown on Map 24. After the building is no <br />longer required it will be removed as part of the reclamation phase for the mine. <br />The overland belt conveys coal to the crusher building. An alternate to this system will be loading of trucks at the <br />stockpile, and then hauling the coal over the existing haul road to Tipple 2. The trucks to haul coal from the RO- <br />M stockpile to the tipple would use the existing haul road. <br />• <br />WPPROVED APR 2 4 2000 <br />Permit Renewal No. 3 2.05-26 12/10/98 <br />