2002-04-26_REVISION - M1983033 - Laserfiche WebLink

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ExNlsrr D MINING PLAN (CONT) H®m Avon 2002 slope. Filling will leave a slope that is 3h to 1 vertical and will match the upper parts of the mountain above the site. The cross section in Figure D-1 on page 11 shows how the benches would look during mining. The cross hatched area is the fill we will place to create a uniform 3h to lv slope. If at any time we find we do not have enough fill to recreate the slope we will mine on a 3h to 1 slope, so it will match what is shown on the map. As the mine face on this new area reached face in the existing area they will joined to create a single working face advancing across the property. During planning it was determined that the mine face would advance approximately 145 feet per year in this area. That was the using to determined that no more than 1,000 linear feet of north slope area will be left open for filling at one time. IT is estimated that it will take 25 to 35 years before mining began on this north slope area. within this area backfilling will be taking place on the west end as mining progresses on the east end and the area between will be used to store reclamation material until needed. As the area in front of the mine face is stripped and made ready for mining, the overburden will be placed in the backfill area. This will allow us to only handle it once and as the waste fines are produced they will also be place in the backfill area. Figure D-2 on page 12 shows the areas of mining in Stage I and estimates how much time it would take to mine each area. These areas are used to show the life of the mined area and do not represent any particular mining direction, development plans or exact time periods. Amendment # 6 - FRONT BERM The county permit requires that the front berm be left as it is now. This berm is the hill lying between the two access roads 6