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2.05.3 - OPERATION PLAN - MINE PLAN AREA <br />PRODUCTION METHODS AND EQUIPMENT <br />METHOD OF COAL EXTRACTION <br />The King II Mine will be an underground coal mine. A maximum <br />stripping ratio of 1:50 make coal extraction operations amenable to <br />underground methods only. The method used is common to most U.S. <br />underground coal mines and is called coal extraction by room and pillar <br />mining. A series of mine openings are developed from the surface to the <br />coal resources of the mine property. At the King II Mine, the upper <br />Menefee coal seam outcrops along Cochran Canyon. The portals (mine <br />openings) are to be constructed at the seam outcrop. The openings or <br />entries are then advanced in the coal following the seam. No shafts <br />(vertical openings) or inclines through overburden material are <br />necessary. <br />The coal reserves are divided up into sections or panels convenient for <br />extraction. First, rooms are developed leaving coal pillars to support the <br />main roof. Later, after a panel has been developed, the pillars are <br />extracted on retreat from the panel. In this way, the recovery of the coal <br />is maximized. Since pillaring operations began at the King I Mine during <br />the late summer months of 1979, the extraction ratio of coal removed <br />from the panels to coal left behind is 5:1. This is an excellent extraction <br />ratio. <br />MINE WORKINGS <br />Map King II -005 shows proposed mine workings within the Permit Area <br />boundaries. Superimposed above the workings, the surface topography <br />has been drawn in for correlation purposes between the surface and the <br />underground workings. <br />MINING EQUIPMENT <br />The coal will be mined using one or two continuous mining units <br />(sections). These sections consist of one or two continuous miners, 2 -4 <br />shuttle cars, one or two dual boom roof drills (bolter machines), a <br />feeder /breaker belt feeder, and a 12,470- 950/480 volt power center. <br />After coal is ripped from the face, it is loaded into the shuttle cars for <br />transporting to the conveyor belt for removal from the mine. All the <br />above equipment is electrical. Haulage vehicles for moving men and <br />supplies into the mine are diesel or battery powered. <br />Electric power for the mine is supplied by a surface sub - station. Voltage <br />entering the mine is 12,470VAC which is stepped down by the <br />GCC Energy, LLC King II Mine <br />Section 2.05.3 <br />Page 1 November, 2009 <br />