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1 • • <br />' ' Ph <br />I - - <br />- - - - - 18 <br /> ase <br />- acres <br /> Phase II- - - 1 acre <br />' _ _ _ _ _ <br />Phase III - - 78 acres <br />~ Phase IV- - - - - - - - 21 acres <br />' The <br />r <br />e al mi <br />i <br />b <br />i d is t <br />i <br />f <br />ll <br />d <br /> g <br />ne n <br />ng process <br />e <br />ng use <br />yp <br />ca <br />erre <br />y re <br /> to as an open pit mine. This is a method of extracting <br />' sand and gravel from their natural deposits, whi~~h is <br /> commonly used throughout the Western states where over- <br />. ' burden is shallow. <br />All the operators pits currently under operation are of <br />this type. They are accustomed to producing gra~~el pro- <br />, ducts in this manner and have become efficient at conserv- <br />ing their energies resulting in a minimum of disi:urbance to <br />' the site. <br />1 <br /> <br />1 <br /> <br />1 <br /> <br /> <br /> <br />1 <br /> <br />7 <br />