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The vertical extent of workings in the Upper Starkville Seam is <br />• expected to be 52 inches, as shown in the following <br />cross-sections <br />Vert. <br />Extent <br />Mine <br />Workings <br />(4.3~ ) <br />• <br /> <br />Shale <br />Coal with Shale <br />Stringers <br />4.v' <br />Shale <br />The vertical extent of workings in the Lower Starkville Seam is <br />expected to be 66 inches. The vertical extent extracted in both <br />seams may vary as the seam thicknesses vary and also to provide <br />safe roof conditions. <br />Shale S. 3' <br />Vert. <br />Extent <br />Mine <br />Workings <br />(s.~l <br />Coal with Shale <br />Stringere <br />3.3' <br />Shale 2. 0' <br />~. <br />LOWER STARKVILLE <br />19 <br />UPPER STARKVILLE <br />