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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />Geotechnical Engineering Investigation <br /> <br />by the U.S. Soil Conservation Service in 1986 (Davis Handbook of Applied Hydraulics, 1993), <br />when considering the core / shell interface. The size distribution of the core and shell material <br />prevents the movement of core material through the embankment shell, minimizing and / or <br />eliminating the possibility for internal piping or erosion of the core. <br /> <br />Continental Dam <br /> <br />Page 17 <br />