Laserfiche WebLink
• 2.05.3(6) Overburden (continued) <br />can be gathered prior to overburden removal by one of several <br />methods which ever one is the roost efficient and econowical. <br />These are: (1) drag line, (2) truck and front end loader, and <br />(3) dozer and scrapers. <br />The first phase of mining is projected to end at fifty (50) <br />feet east of the pipe line and parallel to it. By successfully <br />back casting overburden into the wined out pit area as wining <br />progresses, and restoring the surface, the end result would only <br />leave a small area to be reclaiwed at the end. <br />The post-wining cross sections indicate if all of the coal <br />is removed during wining, because of its 10 foot thickness, a <br />void of 29~ will result in restoring the wined out area to its <br />• original configuration. A swell factor of 14Ac can be added, <br />however, since a large part of the overburden to be resoved is <br />colluvial in nature and already exhibiting expansion. Taking <br />this into account still leaves a 15~ void which can easily be <br />blended in with the surrounding topography. Cross sections <br />before and after wining, and voluws calculations are shown on <br />Map No. 7. <br />The removal of overburden in the second phase, east of <br />Engleville Gulch will follow the saws procedure as the first <br />phase, however, the scrapers will probably only be used in the <br />south portion of the pit where the topography is relatively <br />flat. The rewainder of the overburden will be handled by the <br />drag line. <br />• <br />2 <br />