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~? <br />--1 - <br />.m <br />[ W <br />to <br />a u <br />rt H <br />U F <br />_. ~ ~. <br />II <br />O O O \ <br />Y. <br />65 <br />x <br />w <br />F <br />w <br />a <br />H <br />A <br />W X <br />a M <br />0 ~ <br />:C N <br />.. ` <br />APP RO %SIMATELY <br />1/6x <br />Spar..inq of Auger Holes <br />As Drilled From The High Wall Face <br /> a <br /> a <br /> <br />~~ ~ ~ <br /> <br />~ m <br />r <br />3 w <br />~ x <br /> ~ C7 <br />a V r-i <br />a ~ x <br />O :r: <br />U H <br />l1 <br />X <br />1 <br />120' - 250' <br />Longitudinal Section of An Auger Hole <br />Fig 9f <br /> <br />~. <br />[ <br />i.' <br />'' I <br />[t~, <br />{:: <br />;• <br />