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West Elk Mine <br />products are blended in the plant as required to meet customer specifications. The refuse <br />material is conveyed by 550 -foot long, 36 -inch wide conveyor PP -4 into a 300 -ton truck <br />loading bin at the RPE coal refuse area. The truck loading bin loads off - highway trucks for <br />distribution to the coal refuse pile. Conveyor P -6, a 200 -foot long, 36 -inch wide stacking <br />conveyor and the fines stockpile on the LRP allow for temporary storage of up to <br />approximately 5,000 tons of coal and /or coal fines product. If needed, the fines can be used <br />for later blending to meet coal quality specifications, or can be transported to the RPE for <br />disposal, depending on the quality of the fines. Refer to Exhibit 81 for more specific <br />information. <br />Water will be supplied to the Preparation Plant via a new 8 -inch diameter buried HDPE <br />pipeline. The coal preparation plant is a closed -loop system designed to produce no effluent. <br />As a precaution, a buried HDPE discharge water pipe was installed to flow to a sediment trap <br />on the south east corner of the bench and flow to an existing LRP perimeter drainage ditch. <br />The Plant Control and Lab building is a two -story steel -sided building on the south side of the <br />plant building. The preparation plant controls and operating facilities are housed on the top <br />floor and third -party- operated laboratory facilities are housed on the bottom floor. These lab <br />facilities replace the lab facilities formerly located near crushed coal stack -tube ST -4. <br />Storage Silos <br />Two silos provide temporary storage for product coal. These silos provide the storage capacity <br />needed to accommodate MCC's production schedules and use of unit trains for shipping <br />product coal from West Elk Mine. The reinforced concrete silos provide about 24,000 tons of <br />product coal storage capacity. The silos were designed to reduce the hazard of spontaneous <br />combustion by minimizing dead storage areas within the silo compartments. <br />Crushed Product Coal Stacktubes and Underground Reclaim <br />A 48 -inch width conveyor belt transports crushed product -sized coal from the top of Silo No. 2 <br />to stack -tube ST -4. This stack -tube is approximately 106 feet in height and is constructed <br />similarly to the run -of -mine coal stack - tubes. The transfer structure on the top and the reclaim <br />tunnel and conveyor belt underneath the area are also similar in construction to the run -of -mine <br />coal stack -tube facilities. A dozer trap and reclaim system, located just west of the silos, is <br />similarly constructed, as well. <br />Product -sized coal will be conveyed from the Coal Preparation Plant on conveyors P3 and P5 <br />to stack tube ST -5. Conveyor P -4, a 200 foot long, 48" wide conveyor designed to move <br />product coal from conveyor P -3 to stack tube ST -4. P -4 can also be reversed to move product <br />coal from product conveyor S -3 to ST -5. Product coal conveyor P -5 is designed to discharge <br />only to ST -5. The R -5 reclaim conveyor and tunnel will be extended to a point east of ST -5 to <br />provide for reclaim to the existing unit train loading conveyor. <br />2.05 -44 Rev. 11/04, 03/06, 04106& 05106- PR10; 08109- TRIM; 08109- TR119; 09109 - MR357 <br />