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HIGHWALL MINER MINING PLAN AND PANEL DESIGN INFORIViATION: <br />1. The area will be surface mined according to the approved, existing mine plans. <br />2. After overburden and coal removal is completed, some highwalls and endwalls will be mined <br />by a highwall miner, see Exhibit 12-3b, Operations Plan II-W L.O.M and Exhibit 12-Ib, <br />Sheet Z of 2, Operations Plan Yoast. It should be noted that the aeeas as shown on Exhibit 12- <br />3b and Exhibit 12-1b, Sheet 2 of 2, are the projected final highwall locations, and highwall <br />mining areas will vary based on the exact final highwall locations and associated mining <br />conditions. <br />3. Highwall mining operations will be conducted during 24 hours a day on a 5-7 day/week <br />schedule based on the current anticipated mine production projections. When working, after <br />dark, adequate illumination for the work areas shall be provided per §77.1504(e). <br />4. Coal will be extracted utilizing continuous miner, starting at the coal seam face to maximize <br />recovery and coal quality, recovering full seam thickness and a potential penetration depth of <br />up to 1000 feet. <br />5. Coal will either be conveyed onto the pit floor or directly into the haulage tnicks. If conveyed <br />onto the pit floor the front-end loader/dozer will stack the coal away from the highwall miner <br />for loading at a later time. <br />6. Coal haulage traffic will be routed through the pit area using the established pit ramps <br />traveling in a one-way directional flow pattern only. Utilization of the pit ramps will <br />minimize the distance traveled through previously highwall mined areas. Haulage trucks will <br />run on the spoil side of the pit, and generally exit the pit at a lower elevation from where they <br />entered the pit. Haulage traffic shall not be routed within 25 feet of any highwalls that exhibit <br />sloughage or other evidence of movement. <br />7. In the event of a blast occumng within 1000 feet of the highwall mining operations, the <br />highwall miner will cease operation and back away from the highwall a minimum of 50 feet. <br />Upon completion of the blast and the all-clear signal given, the highwall shall be reexamined <br />for any problems caused by the blast, and commence mining if the highwall has been deemed <br />safe to proceed again. <br />8. The n:irrinnrm s~mcing between holes wild be based on the table as shotivn below: <br />2 <br />