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2 - 57 <br />Figure 2.5.3 (Section B•B~ is a view looking northeast showing the grabens disruption of <br />the Cameo Coal seam. Hole numbers 7-15.3.3, 7-15-4, and 7.22.2 have been interpolated <br />back to the plane of section. Spec~cally, hole 7-15.33 is 670 feet in front of (southwest) <br />Section B-B', and holes 7.15.4 and 7.22.2 are 640 and 910 feet behind (northeast) the plane of <br />section respectively. Also noteworthy is the split seam which will allow us the possibility of <br />mining both seams where interburden and roof rock integrity allow. <br />With the development of the surface facilities, the underground workings, and the lack of <br />aftemative access, the McClane Portal has proven to be the most logical access to the coal <br />reserves within the graben. Originally we had estimated between 2.0 million and 2.5 million tons <br />of recoverable coal lie in the Cameo Seam within the McClane Graben. Because the extensive <br />overburden to the northeast has terminated our recovery potential, this number will be <br />• dramatically reduced. Rock slopes were initiated eastward out of the graben in the summer of <br />1990. The completion the slopes allows access to the larger, uninterrupted reserves east of the <br />graben. However, mining conditions within the graben to the northeast have indicated that <br />where overburden exceeds 1,400 ft; coal recovery economically questionable and technically <br />difficult. <br />• <br />M~ Volume 1 4-29.96 <br />