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<br />(4) Exhibit D - Mining Plan <br />Ore Body <br />The ore body is comprised of a deposit of 10 to 7.5 feet of <br />' Valley-fill materials of the Pleistocene and Recent ages <br />which makes up the flood plain of the Cache La Poeidre River. <br />' Underlying bedrock throughout the site area is a deposit <br />of Pierre Shale. <br />1 <br /> Timetable <br /> The timetable is referenced on sheet 2 of 3 which. outlines <br />th <br />h <br />i <br />f th <br />i <br />f th <br />Ph <br />t <br />ti <br /> as <br />ng o <br />e var <br />ous s <br />ages o <br />e opera <br />ase <br />e p <br />on. <br /> I begins September 1, 1977. <br /> <br /> Mining Operation <br />' The method of mining this site is basically one of drawing <br /> the water level down and extracting the ore body by means of <br />' front end loaders and a shovel with removal by scrapers. <br /> Other than haul roads this has no disturbing effect upon <br /> adjacent land. A dust palliative is used to minimize air <br /> pollution caused by moving machinery. All topsoil is stock <br /> piled and replaced on the above water portion of pit <br /> banks as a part of the reclamation operation. All earth <br /> moving operations utilize rubber tired earth-moving <br /> equipment. <br />' Existing water comes from natural ground water conditions <br />and does not result from diversion or impoundment of other <br />' waters. Water management consists of drawing down working <br />pits and equalizing water levels throughout the system. <br />' Size of Working Areas <br />Pit No. 1 is comprised of four phases or cells, which are <br />' illustrated on sheet 2 of 3. <br /> <br /> <br />F <br />