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2.05 APPLICATION FOR PERMIT FOR SURFACE OR UNDERGROUND MINING ACTIVITIES - <br />MINIMUM REQUIREMENTS FOR OPERATION AND RECLAMATION PLANS. <br />• hauler by a large push plate. Other systems included electric shuttle <br />cars which use a wide conveyor chain to discharge coal and flighted <br />continuous haulage systems, which connect the continuous miner <br />directly to the mine conveyor system. <br />The mine conveyor system consisted of up to 13 approximately 3000 foot <br />long flights of 98" wide conveyor belts. These flights were powered <br />by double drum 900 hp drive units with hydraulic belt takeups. The <br />conveyor system transported the extracted coal to the surface at the <br />East Mine Portal <br />Support equipment for the underground operation included the use of <br />modified diesel pickup trucks, diesel powered end-loaders and custom <br />built service units for belt repair, machinery servicing and timbering <br />duties. <br />The mine was powered through the east portals with 7200 volt power <br />through 350 MCM cables. This power was switched and converted to 440 <br />volts at varies intersections in the mine and at section transformers <br />in the working sections. <br />Travel throughout the mine was accomplished via diesel pickup truck <br />along graded and drained roadways. <br />Airflow throughout the mine was directed by galvanized steel <br />stoppings, overcasts and check curtains. Face ventilation was by 36 <br />inch fiberglass tubing and large mobile face fans. The mine used a <br />• fishtail ventilation system on the production unit, where fresh air is <br />drawn in on the unit through the travelways and then directed back <br />down both sides of the production unit in separate return entries. <br />The mine had a variance from the Federal ventilation standards that <br />allowed it to use belt conveyor entries as additional intake entries. <br />(2) Operation Description <br />Mining ceased at the Bowie No. 1 Mine on December 4, 1997. The area <br />which has been mined and the sequence of the mining is shown on Map 2- <br />5. No mining is projected for the next five year permit term. <br />I • <br />Permit Renewal - 9 - 01/03 <br />RN-Oy (4~9~oy~ <br />M2-la6 <br />