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06032 <br />Exhibit D -Mining Plan <br />Overview <br />Banks and Gesso, LLC <br />r~Fa ;~-oa c.~~~g, <br />~`. ~ }~ <br />FEO 0 5 2007 <br />Commercially valuable clays exist within several strata underlying the ~'i7l~jectgr~~te~afety n, <br />generally from a point at or near the land surface to depths of approximately 60 feet. <br />The intent of the mine is to provide a clay source for the integrated operations of the <br />Applicant, specifically the manufacture of brick and block materials. Clay will be mined in <br />short (typically less than 60 day) campaigns each year, sorted and stockpiled on the site <br />by type, and loaded and trucked to the plant in Castle Rock intermittently, as appropriate <br />to demands throughout the year. <br />The site will be mined in phases, consisting of incremental disturbances for annual <br />campaigns within two primary phases of mining. The first phase will include <br />approximately 10 acres considered the richest area for desired clays, lying along the <br />eastern boundary of the affected area for mining. Working in estimated 40,000 ton <br />annual campaigns, mining will progress outward from the initial cut until the reserve is <br />depleted, as depicted in Exhibit C. <br />Topsoil and Overburden <br />Topsoil and overburden/waste rock will be salvaged and stockpiled separately. <br />Generally, areas to be mined will be stripped of any substantial topsoil prior to mining, <br />which topsoil will be placed in stockpiles (see Exhibit C) at the nearest edge of the area <br />to be disturbed. The extent of stockpiles shown on Exhibit C is an estimate based on an <br />average assumed salvage depth of 6 inches. Given the site's topographic situation, it is <br />possible that topsoil depths will vary to depths both above and below across the site. <br />The illustrated footprint and typical section provides adequate capacity to contain <br />whatever actual topsoil salvage is achieved. <br />Overburden stockpiles include not only an assumed average depth of non-commercial <br />rock and substrate overlying the commercial deposit, but also capacity to account for a <br />50% waste factor based on non-uniformity of clays and interstitial deposits (e.g., lignite <br />seams). To prevent the site from being overvvhelmed by overburden and waste rock as <br />mining progresses, the Applicant is proposing concurrent reclamation (see Exhibits E <br />The Denver Brick Company January 2007 <br />Kiowa Clay Mine Page 6 <br />