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Revised <br />October 16, 1981 <br />_ Once the overburden is sufficiently fragmented to allow for efficient <br />• loading, the overburden removal will commence. The location of the <br />proposed mining areas are shown on the Kline Plan Map (Map 6). <br />The proposed mine plans call for initial boxcuts to be dug in each area <br />of the mine plan area where the overburden thickness will provide a <br />favorable stripping ratio. Beginning in the areas of favorable cover <br />will allow the mining and subsequent mining areas to be relatively <br />parallel to the strike of the coal. <br />Overburden materials from these initial boxcuts will not present a <br />problem for the Viking Coal Company. The overburden volume from the <br />initial boxcuts will be used in backfilling the final mining areas of <br />each independent mining area. Boxcut material will be dug utilizing a <br />front end loader or scrapers. A front end loader will load the material <br />into off highway trucks, and the trucks will deposit the material into a <br />temporary overburden stockpile location next to the boxcut. The <br />• location of the planned initial temporary overburden stockpile is shown <br />on the Mine Plan Map (Map 6). <br />After initial overburden has been removed to the temporary stockpiles, <br />sufficient working area would be developed so that overburden can be <br />directly backfilled into mined-out areas. The overburden material will <br />be removed in a series of lifts or benches not to exceed 40 feet. <br />After the removal of the overburden, the coal seams will be exposed. As <br />the coal seams are exposed, they will either be drilled and shot with <br />explosives or ripped. <br />' If explosives are needed, the drilling will be performed by rotary <br />drill. The drilling pattern will be in the range of 10 feet by 10 feet <br />but will be dependent upon the actual coal seam thickness. Drill holes <br />will be loaded with either ANFO or a waterproof slurry, if the holes are <br />wet, to a typical powder factor of about 0.2 to 0.3 pounds per ton. <br />n <br />Ruv~ 22C <br />