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TEMPORARY SPILING <br />32mm INJECTION BAR <br />18" O.C. <br />TEMPORARY SPILING <br />51mm INJECTION BAR <br />12" O.C. <br />EXISTING GROUND <br />SHOTCRETE <br />/A <br />SHOTCRETE BATTER <br />VERTICAL TO 5 <br />Yeh and Associates, Inc HDRa. <br />Consulting Engineers & Scientists <br />TOP OF SHORING <br />J <br />RMANENT STEEL <br />ARCH -SET / 1 <br />(( (BYO OTHERS) \� <br />DRAWN BR. MJW <br />CHECKED M. ODA <br />DESIGNED FOR. Rio GRANDE SILVER <br />PROJECT NUMBER - 211-190 <br />SCALE <br />VERT <br />PROPOSED GRADE <br />i (EL= 9,4009 <br />DATE. 10-14-11 PROJECT. <br />DATE. 10 -14 -11 <br />BULLDOG MINE <br />TYPICAL SECTION <br />TEMPORARY SPILING <br />SHEET <br />7 <br />9 <br />