Laserfiche WebLink
2-19 <br />UPPER CAMEO SEAM <br />Initial exploration and development has mainly occurred in the Total Gameo Seam. <br />A small area of Lower Cameo was mined near the end of the 001 North Section. <br />Mine design has been based on recovering the most consistent seam in those areas <br />where more than one seam exists. As is shown on Figure 2.1-6, The Upper Cameo <br />Seam appears to reach minable thickness in areas of the McClane reserves. <br />Additionally, some of the thicker areas do have more than the required 50 feet of <br />interburden between the upper and lower seam. There may be areas where both <br />seams can be mined. <br />The information available at this time regarding the thickness of the <br />interburden split between the Upper Cameo Seam and the Lower Cameo Seam is <br />insufficient to identify economic areas of two-seam mining. The operator will be <br />evaluating the possibility of two-seam mining on a continuing basis. When the main <br />and submain entries are driven to the permit boundary, underground drilling of the <br />interburden will be used to determine if the interburden is thick enough over the <br />lower seam. Thickness of interburden greater than 50 feet will make the lower seam <br />economically minable. The drilling will occur in conjunction with entry <br />development. Holes from entries in the upper seam will be periodically drilled to <br />the lower seam. If this drilling determines that an economic reserve exists, <br />permitting and development of slopes to access the lower seam will be undertaken. <br />It may be possible that a parallel set of entries may be driven from where the seam <br />splits to access the lower seam. The development in the lower seam will be <br />designed so that the entries and panels are directly below the workings in the upper <br />seam. <br />McClane Volume 1 February, 2002 <br />