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material. Generally, all interburdens below the X Seam are removed <br />by dragline, but at times other equipment can remove material below <br />the X Seam. <br />Drilling and Blastinq_ <br />Drilling operations will adhere to procedures outlined in MSHA <br />regulations Subpart K §77.1007 - §77.1013. The use and handling of <br />explosives will follow MSHA regulations as outlined in Subpart N <br />§77.1300 - §77.1304. <br />Auger Mininq: <br />Auger mining may occur in the "C" and "E" seams in the end <br />wall of the multiple seam pit in the area depicted on Exhibit B. <br />The highwall prior to augering will be approximately 115 feet above <br />"C" coal in addition to any overlying dragline spoil. The <br />interburden between "C" and "E" seam is approximately 75 feet. The <br />overall slope of the highwall above "E" will be about 55° or less <br />(see Exhibit C). A catch bench approximately 50 feet wide will be <br />established at the toe of "B" coal. Another catch bench <br />approximately 25 feet wide will be established at the toe of "D" <br />coal (or approximately midway between "C" and "E" where "D" is <br />absent). The slope of individual highwall benches will be less <br />than approximately 80°. The minimum levels of web thickness will <br />depend on the seam and auger type per the following table and <br />Figure 1: <br />~i <br /> C SEAM E SEAM <br />Single Auger - 1 Hole 35" 75" <br />Single Auger - 2 Hole 22" 45" <br />Double Auger - 2 Holes 38" 68" <br />4 <br />