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EXISTING GROUND <br />PORTAL /A <br />~ (BY OTHE <br />TOP OF STEEL <br />ARCH SUPPORT <br />TEMPORARY <br />SPILING <br />PORTAL <br />hil <br />OPENING <br />O <br />IPO <br />PERMANENT STEEL <br />(BY OTHERS) ARCH S <br />Vii <br />6 o ° <br />w . f( 1j l <br />9500 <br />9400 <br />9300 <br />3+00 <br />2+00 <br />)A <br />Yeh and Associates, Inc HOR.I <br />Consulting Engineers & Scientists <br />DRAWN BY- M <br />CHECKED BY: BRA <br />DESIGNED FOR- RIO GRANDE SILVER <br />PROJECT NUMBER. 211-190 <br />SCALE <br />VERT <br />DATE: 10-14-11 PROJECT: <br />DATE' 10 -14 -11 <br />9500 <br />9300 <br />0+00 <br />BULLDOG MINE <br />CROSS SECTION A -A' <br />SHEET <br />5 <br />OF <br />9 <br />