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• 2.04.6 <br />characterized by alternating claystone, siltstone, <br />sandstone, and minor carbonaceous horizons. The <br />lithologies comprising the barren member of the Mesaverde <br />formation are typically laterally discontinuous and <br />undergo abrupt facies changes within short distances. <br />The atratigraphic interval between recognizable horizons <br />may also change drastically, making correlation <br />difficult. The base of the barren member is <br />approximately 700 ft. above the top of the Rollins <br />sandstone and the total thickness varies greatly as a <br />result of topographic elevation and erosional <br />geomorphology. <br />(3)(a)(i) The coal bearing member of the Mesaverde formation is <br />atratigraphically between the Rollins sandstone and the <br />barren member, with the approximate 700 ft. thickness <br />completely present, except near the outcrop area. The <br />coal seams which comprise the Bowie No. 2 Mine reserve <br />occur in the Bowie and Paonia Members of the Mesaverde <br />Formation. A total of eight separate coal seams have <br />• been correlated and measured. The B-2 Seam, D-2 Seam, in <br />ascending order, from the top of the Rollins sandstone <br />have been found to be potentially commercially viable for <br />mining by underground methods. <br />The A-Seam directly overlies the Rollins sandstone with <br />a thickness range from 3 to 5 feet. The area where the <br />seam does achieve a mineable thickness does not comprise <br />a reserve of adequate areal extent to be considered a <br />coal resource. <br />The B-1 Seam, lower H-Seam, meets the minimum physical <br />criteria to be considered a coal resource. The B-1 Seam <br />thickness ranges from 5 to 16 feet. The reason the seam <br />is not considered a coal resource is because of <br />inadequate interburden between the B-2 Seam and the B-1 <br />Seam. The interburden between the seams ranges from 6 to <br />54 feet on the fee property. The seams are separated by <br />as much as 30 feet of interburden in only a small portion <br />of the property. In order for a seam to be considered a <br />coal resource the interburden between seams must be at <br />• least 30 feet. The B-1 Seam overlies the A-Seam by 86 to <br />P6PMIS IVPLICATIOR 2-04 - 15 - <br />