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4.� COLUMBUS PORTAL. <br /> ' EL %242 <br /> I � <br /> I � <br /> MINE DRAINAGE <br /> / 7 J <br /> MINE WASTE DUMP. <br /> EL 11.242 ` <br /> EL U, 205 � 1p,224/ <br /> ACCESS ROAD <br /> /-7 <br /> TIUJJI' <br /> EL. <br /> WA�FTE <br /> f <br /> COLUMBUS MILL <br /> EL. M.190 <br /> ,5vtOpD <br /> 4 MINE�WASTE AC <br /> �o <br /> Jai <br /> BLDG. 10 <br /> EL. d.160 <br /> �a 0D <br /> MAg RIVER <br /> \ OOR'OR'ATION COLUMBUS MINE SITE <br /> SCALE : 1 IN. : 50 FT. <br /> I1 VeRTON.COLORAW <br />