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Long conveyor belts are twisted 180 degrees after the belt passes the discharge pulley. This puts the <br />clean side of the belt in contact with the return idlers which reduces idler and belt wear and prevents <br />particles of coal from falling under the conveyor. Another 180-degree twist is made ahead of the tail <br />pulleys. <br />Conveyors are covered the entire length. The covers extend about three-quarters of the area around <br />the belt in order to protect the conveyor from snow and rain and keep the wind from blowing coal off the <br />belt. <br />IV.C.B Clean Coal Storage Coal is transferred at a rate of 1,500 tons per hour from the overland <br />conveyor onto a tripper belt located within the 25,000-ton slot storage facility. This tripper runs back and <br />forth the length of the storage barn directly under the ridge of the roof. <br />The bottom of the storage facility is below ground level. The side walls of the storage facility below <br />ground were fabricated from reinforced earth concrete modules with metal tie-backs into the surrounding <br />earth. Directly beneath the storage center and running the total length are two moveable plow feeders <br />that reclaim 3,000 tons per hour of coal from the "V"-shaped bottom of the storage and feed the coal <br />onto a conveyor that is enclosed in a 12-foot high by 18-foot wide reclaim tunnel. The bottom of the <br />tunnel is sloped towards one end for water to drain into a sump pump. The drainage water is pumped to <br />an above ground local settlement pond. <br />At one end of the storage, a square concrete shaft houses an automatic elevator vertical access <br />stairwell and an equipment removal well. A ventilation fan removes air from the 12-foot x 18-foot <br />concrete reclaim tunnel beneath the entire length of the storage barn. The bam roof vents vent any <br />accumulation of methane gas from the coal to the atmosphere through filters to keep the coal dust inside <br />the storage facility. The portion of the storage above ground is supported by steel girder bents and <br />covered with siding to keep the dust totally inside the storage. <br />The reclaim conveyor conveys 3,000 tons per hour of coal from the reclaim concrete tunnel to the top of <br />the rail car loadout structure. A belt scale is mounted on the conveyor to record coal tonnages being <br />shipped by each train. <br />IV.C.9 Railroad Loadout and Coal Samoling Coal from the reclaim conveyor is dumped into a <br />300-ton rail loadout bin. At the bottom of the bin is a hydraulically operated slide gate controlled by an <br />operator located in a control room adjacent to the rail cars. A moveable chute is used to toad the cars. <br />Any coal spilled inadvertently during loading rail cars is temporarily stored near the loadout building <br />before being hauled off. Similarly, any excess antifreeze solution sprayed on the coal in subfreezing <br />weather will be collected in a local catch basin. <br />Mine Permit Renewal #3 (Rev. 8/99) IV-11 <br />