Laserfiche WebLink
<br />various methods described in Illustration 44. See Illustration 44 "Typical Borehole, Exploration, <br />and Shaft Pads", "Drill Sites -Gentle Slopes", and "Drill Sites with Good Cover". During the <br />grazing period from December 1 through May 15, the mud pits will be left in a reasonably dry <br />condition so they do not pose a hazard to sheep. <br />Upon successful drilling and hole completion, the overburden from the mud pits is backfilled and <br />smoothed out. The disturbed area (drill site and mud pits) is ripped to a minimum depth of one <br />foot below grade prior to topsoil replacement. Stockpiled topsoil is spread evenly back over the <br />disturbed site. Sediment control of the disturbed area will be maintained during revegetation <br />according to the measures described above. Drill site seed mix, shown in Tablet/-10, is broadcast <br />seeded and raked in. Access to the hole is necessary to monitor the success of the de-gassing <br />effort. Access roads used during drilling and monitoring of vent holes will be scarified and <br />reseeded next fall after such access is no longer required. <br />III.A.9 Underground Transportation Rubber tired vehicles are used to carry personnel and <br />supplies from the surface to the underground mining area. <br />Coal is transported from the working areas by belt conveyors. The slope conveyor delivers the <br />• wal to the surface coal handling facilities. <br />III.B Surface Support Facilities <br />Before the run-of-mine (ROM) coal can be shipped to the power plant, all or part of it is processed <br />in a preparation plant to remove some of the impurities. Coal handling and preparation facilities <br />have been constructed in the SE1/4, Sec. 4, T2N, R101 W (Maps 1 and 2). <br />111.8.1 Coal Handling and Storage The ROM coal is transported out of the mine portal on a <br />54-inch conveyor belt. A series of conveyors then transport the coal through the various storage <br />and preparation facilities. All conveyors are partially covered or totally enclosed to reduce dust <br />emissions and protect the belt from the weather. ROM coal is delivered directly to the rotary <br />breaker. <br />In the rotary breaker, large rocks and foreign material are removed from the ROM coal. The raw <br />coal is then placed on a conveyor and transported to twin 10,000-ton raw-coal silos from which the <br />• Midterm Review (8/2002) III-28 <br />