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• • iii iiiiiiiiuiii iii <br />AI EXHIBIT B <br />Mining Plan <br />Airport Pit <br />Mining operations will proceed from the existing pit in e~ <br />northerly direction. There will be about y acre of ground disturbed <br />each year. At this rate the east half of the pit should be exhe~usted <br />by 1985 or 1986. As work occurs in the east half, the east and <br />south sloped will be graded to accomplish reclamation. <br />The southwest quarter of the pit will be used between 19 E.6 <br />and 1990. Existing crush material will have been removed by this <br />time, and due to the make-up of the pit material, it is not expected <br />to produce any more crush material than that Which exists in the one <br />acre crush pile shown on Exhibit C. As material in this section. of <br />the pit is removed, the south and west slope will be back-slopes. <br />to accomplish reclamation. <br />The northwest quarter of the pit will be exhausted between <br />1995 and 1998. During the operation in this portion of the pit, the <br />slopes will again be graded as part of the operation in order tc <br />facilitate final reclamation proceedures as outlined in Exhibit E. <br />Two basic types of techniques will be used to remove gravel <br />from this pit. During the summer months, rubber tired loaders M~i th <br />steel teeth will remove the material. During the winter, a crakler- <br />dozer with a ripper attachment will be used to break up this frczen <br />material so that rubber tired loaders can handle the material. Loaders <br />will then place material into 12 yard tandem dump trucks or 6 yard <br />single axle dump trucks, depending on the type of work being <br />accomplished. <br />- - <br />C~::C i :; 1977 <br /> <br /> <br />