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eh <br />ESPEY, HUSTON 6 ASSOCIATES, INC. <br />Access to the G seam was via four portal entries into the coal seam on <br />the west side of State Highway 13/789. These entries were driven to the west 2400 <br />feet. The entries were then turned to the northeast and will be driven 2000 feet and <br />turned to the east. For the mining sequence beyond this point refer to Exhibit C-4. <br />The Rienau No. 2 (G-Seam) Mine has an approved roof cortrol plan. The <br />plan requires roof bolts to be placeci.on 4 1/2 ft.. centers along all entries. <br />Additional support will be added as needed. <br />Water will be pumped from the face azeas, into underground settling <br />ponds, and then out of the mine, and into sediment ponds. <br />Ventilation is obtained by means of an exhaust type system. The exhaust <br />fan creates a negative pressure forcing air in through the intakes, across the mining <br />I• faces and back out the returns. Air will be directed to the faces by means of <br />temporary and permanent stoppings, overcasts and brattice cloth. The ventilation <br />system will be designed to minimize resistance and shock loss. Three or four entries <br />aze projected to be driven to the outcrop to the south for ventilation. <br />2.4.2.1 Nature and Extent of Coal Seam <br />(Refer to Goal Seam Geology -Chapter F) <br />2.4.2.2 Multiple Seam Mining <br />The permit eventually issued in late 1984 was for mining in the <br />G seam only although mining was originally slated for the P,J <br />and C seams. Before mining in the P and J seams was abandoned <br />Northern requested a revision to allow mining in the G seam <br />until the P and J mine plans were fully reviewed. This revis- <br />ion was titled Mr-B and was approved by MLRD and OSM in the <br />early summer of 1981. <br />I• <br />C'25 <br />~ 7'81 <br />