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graded to service roads and the overall vehicle miles traveled <br /> will be reduced by 60 to 70 percent . <br /> (2) Project description <br /> In addition to this general description of <br /> the rock tunnel project, further details and description of the <br /> project are contained in Appendix II-B-5. <br /> The rock tunnel will consist of two parallel <br /> bores driven from a point near the intersection of the No . 1 Mine <br /> and No . 3 Mine haul roads westerly to an intersection with the <br /> underground workings in the No. 1 mine. From the intersection <br /> with the No . 1 mine the tunnel will be extended an additional <br /> 2, 000 feet to a similar intersection with the overlying underground <br /> workings in the No . 2 mine. Vertical storage bunkers will be <br /> constructed near each of the mine connections to provide in- <br /> transit storage for freshly mined coal . Laterals located either <br /> in the coal seam or in the rock below the coal seam will be <br /> driven to connect adjacent mines with the rock tunnel/bunker <br /> system. From the portal, at an elevation of 8, 565 feet, the rock <br /> tunnel will rise at an average grade of 2 percent. Each bore of <br /> the tunnel will have a nominal cross-section of 12 feet high by <br /> 16 feet wide. (See Exhibit II-B-3) <br /> The first 11, 000 feet of tunnel will be <br /> driven predominantly in the Mancos Shale. At least one dike, <br /> about 30 feet thick, has been penetrated in this section. The <br /> next section, about 1, 000 feet, will be driven through the Rollins <br /> Sandstone and will connect with the No . 1 mine. The remaining <br /> a� <br />