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4 <br /> MINING PLAN <br /> s <br /> CORTEZ PIT — NIELSONS, INC. <br /> The Cortez Pit will be a quarry operation conducted approximately one <br /> hundred (100) feet in elevation above McElmo Creek. Material is sand- <br /> stone and will be initially removed by drilling and blasting to achieve <br /> a level bench and leaving a vertical rock face. Equipment and blasting <br /> will be employed in a manner to minimize the amount of material that will <br /> be lost over the edge of the cliffs. The existing sandstone layer is <br /> approximately forty (40) feet thick and is to be mined in approximately <br /> twenty (20) foot lifts. Rock from the mining operation will be fed to the <br /> crusher or a series of crushers and screens to obtain the size of aggre- <br /> gate desired. <br /> Vegetation will be cleared by hand and machinery and then burned. Topsoil, <br /> where encountered, will be stockpiled for reclamation of the pit. <br /> Material from tills site will be used for public and private work in the <br /> Cortez area. A set of scales will be in place at all times, but other <br /> equipment for mining-and hauling will be moved in onl as required. <br />